All to meet the challenges presented by silty, breakable ground.
|
|
The water, shared among the Yazidis, would soon become silty and putrid.
|
|
The lake, for example, was a tiny, silty pond when they arrived.
|
|
Built on a silty lake bed, Mexico City has been sinking for centuries.
|
|
A significant consequence is a layer of silty, sensitive clay that blankets the Ottawa region.
|
|
The sinker on the line you've been casting your whole life settles in silty depths.
|
|
The hub of this region is La Macarena, a small town perched on the broad, silty Guayabero River.
|
|
And a bunch of the mess—owned by Taylor Energy—is still down there, covered by tons of silty sediment.
|
|
The Deuce shows us the whole river, from the squeaky-clean mouth, through its tributaries, down to the silty river delta.
|
|
The silty river starts to flow, grinds its massive ice jam along the shore at Fort Simpson, while the Mackenzie holds firm.
|
|
It's just across the silty Ariporo River from Hato La Aurora, a 37,000-acre ranch that belongs to the extended Barragán family.
|
|
The beaches were lined with palms and peppered by tiny crabs, though the rather silty brown sands aren't made for magazine covers.
|
|
"Riparian" refers to the cottonwoods and willows crowding the San Pedro's banks, where javelinas scratch out dens and water collects in silty rain pools.
|
|
Divers frequently have to do their work in low visibility conditions like nighttime or silty water, so alternative vision modes are a highly practical addition.
|
|
Our Cessna climbed away from the gridded layout of Anchorage and across Cook Inlet, the greenish aqua and silty river waters that feed it bumping up against each other.
|
|
TANJUNG BATU, Indonesia — Five scientists are wading quickly from the anchored boat through the shallow, silty sea to the dark green shore of East Kalimantan, kicking up plumes of sand.
|
|
It was commissioned by a restaurant group in Hong Kong, which lies about 50 miles east of Shenwan on the edge of the delta where the river's silty water turns ocean blue.
|
|
Originally it was planted around 1910 on silty, sandy soil in a sort of amphitheater facing north and east, about 3,000 feet in elevation near the limit at which nerello mascalese can ripen.
|
|
Sometimes, they'll draw water out of the brown, silty Kanawha River, said Abdul Muhammad, 56, a local Charleston resident and drug user who attended a Narcan training session at the clinic this fall.
|
|
With its overhanging granite walls, moody light and silty water the color of sapphires (if the sapphires had somehow been electrified), the chamber bore traces of both the real-life Blue Lagoon and the fictional Middle-earth.
|
|
He was found face-down in the silty deposits of the Thames, with one arm above his head and the other bent back onto itself and to the side—an orientation more consistent with drowning than deliberate burial.
|
|
Hilarious in the dining-hall morning, funny in the afternoon, but by evening all that was left were two girls with bruises on their shins, the silty residue of a hangover and a lot of homework left undone.
|
|
The most advanced such scheme, known as the Mid-Barataria Sediment Diversion, would create a channel from the Mississippi, south of New Orleans, capable of funnelling 75,000 cubic feet (2.1m litres) of silty water per second into badly eroded Plaquemines Parish.
|
|
After many checkpoints, where officers shake down the young men on motorbikes, some riding two or three at a time, their thin arms curled around each other's waists, you'll see a silty brown river snaking past men lounging on charpoys by its banks.
|
|
With the ground situated on the silty banks of the Thames, bordered by the cloistered greenery of Bishop's Park and only a stone's throw from Putney Bridge, there are few more aesthetically pleasing places to watch football, and no better walk to a stadium in the country.
|
|
And it brought me here, to the banks of a silty brown river, where the cumulative experience of the Taushiro people swung alone in a hammock: A man around 5003 whose memory was fading and whose grasp of the language was slipping away because he had no one to speak it with.
|
|
Here, instead, are miles of hard clay and silty soil, funnels of rock, sandstone hillsides furrowed with pleats into melting, Gaudían formations; here, the wind and rain are so fierce that they have traced their presence onto the stones themselves, which are sometimes smooth but sometimes scarred with so many skinny runnels that they appear wrinkled, like a rhino's hide.
|
|
The Winterburn Group is composed of silty dolomite, evaporite, argillaceous limestone, red and green siltstone, anhydrite, silty dolomite and siltstone. Pinnacle reefs develop in the Nisku Formation.
|
|
The Trout River Formation is composed bedded limestone (top), silty limestone and shale (middle), silty limestone and calcareous siltstone (base). Brachiopod and coral paleo-fauna can be found in outcrops.
|
|
The Grayling Formation consists of dolomitic siltstone and silty shale, with minor silty limestone, dolomite, and very fine-grained sandstone. It reaches a maximum thickness of about 460 metres (1500 ft). The overlying Toad Formation is more calcareous and less dolomitic than the Grayling. It consists of dark grey calcareous siltstone and silty limestone, with minor amounts of silty dolomite and calcareous sandstone and, in the lower part, minor thin, randomly dispersed lenses and nodules of phosphate.
|
|
In that well, the Haynesville Shale consists of silty, argillaceous mudstones, silty, calcareous mudstones, and dolomitic mudstones and dolomites. The silty, argillaceous mudstones contain more than 30% silt- sized siliceous grains. The silt often occurs as laminations within these mudstones. In addition, the argillaceous matrix of such mudstones frequently contains numerous calcareous particles and stringers.
|
|
The Crowfoot Formation consists of anhydrite, silty dolomite, with minor shale.
|
|
The Sassenach Formation was deposited below wave base in an off-reef marine setting. It consists of silty to sandy mudstone and siltstone, with argillaceous to silty and sandy limestone and dolomite. It has a maximum thickness of about .
|
|
Where organic matter is low and silts are rare, the calcareous microfossil and carbonate mud has recrystallized. Possibly, further alteration of silty, calcareous mudstones has resulted in the formation of the dolomitic mudstones and dolomites. Both the silty, argillaceous mudstones and silty, calcareous mudstones often exhibit sparse to abundant, laminated pelletal fabrics.Ewing, T.E. (2001) Review of Late Jurassic depositional systems and potential hydrocarbon plays, northern Gulf of Mexico Basin.
|
|
It can be found in fast flowing rocky streams and sandy silty bottom pools.
|
|
They occur in flat or rocky terrain, and thrive on sandy or silty substrates.
|
|
The Tetcho Formation is composed of fine grained limestone with shale partings, silty at the base.
|
|
This species is only found on silty estuarine bottoms. It can reach a length of TL.
|
|
The texture is usually medium-grained but varies from silty fine sand to coarse gravelly sand.
|
|
Alternating grey fluviatile sands and red silty marls of the Lower Freshwater Molasse at Wallenried, Switzerland.
|
|
The Mohakatino Formation (~17-13 Ma) is composed of silty mudstones, with andesitic, volcaniclastic sandstones. The Mt Messenger Formation (11-9 Ma), also known as the Waikiekie Formation, is a massive sandstone unit. The Urenui Formation (9-5 Ma) is a silty mudstone that contains occasional conglomerates.
|
|
In contrast to H. signifer, which favors muddy bottoms, it appears to favor sandy to silty substrates.
|
|
The marine landscape, with black/gray, silty claystone was indicative that M. averyi also lived an amphibious lifestyle.
|
|
This species is found in sheltered, silty or sand-bottomed estuaries at depths between 1 and 30 m.
|
|
The Albrights series also occurs along Catawissa Creek. This type of soil is topped by a thick layer of reddish-brown gravelly silt loam. Below this layer, there is a subsoil of yellowish-red silty clay loam. Below the subsoil is a layer of mixed gravel and silty clay loam.
|
|
Red Rock Pass has a surface deposit of calcareous silty alluvium with topsoil of dark grayish brown silt loam.
|
|
The silty Cree estuary is a Site of Special Scientific Interest, partly due to the sparling that breed there.
|
|
The Fort Simpson Formation is composed of grey shale and mudstone. The shale can be calcareous, silty or sandy.
|
|
The thick sandy and silty surface deposits are mostly recent, formed as terraces at the mouth of the Ferris stream.
|
|
Silver chubs are mainly restricted to large, often silty rivers; they are sometimes found near the mouths of small streams.
|
|
Near the St. Lawrence River, the low terrace has been covered with a layer of silty alluvia resting on clay.
|
|
The mountain has given name to the Triassic Tschermakfjellet Formation of the Kapp Toscana Group, consisting of sandstones and silty shales.
|
|
The Redknife Formation is divided into the Jean Marie Member (base) and an upper unnamed shale unit. The Jean Marie Member is composed of argillaceous, silty and dolomitic fossiliferous limestone. The carbonates are massive east of Fort Nelson and west of the Alberta border. The upper Redknife consists of calcareous shales with silty limestone and siltstone interbeds.
|
|
They resemble the other silty alluvia found elsewhere along the St. Lawrence River and on the islands, namely those of the Berthierville area.
|
|
The Abram Creek channel consists of shales and sandstones deposited during the Paleozoic Era, including the Ohio Shale (usually divided into the Chagrin Shale, Huron Shale, and Cleveland Shale), the Bedford Shale, and the Berea sandstone). Soils in the watershed are part of the Urban Land-Mahoning association. The central wetland areas consist primarily of Carlisle silty clay loam, while wetland margins and watercourses have Condit silty clay loam and Canadice silty clay loam. Upland areas are mostly Mahoning silt loam with local inclusions of Ellsworth, Fitchville, Glenford and Loudonville silt loams, and Chili and Haskins loams.
|
|
The stream's upper reaches are on much broader bands of the Irish Valley Member and the Trimmers Rock Formation. The Irish Valley Member contains sandstone, siltstone, claystone, and shale. The Trimmers Rock Formation contains sandstone, siltstone, silt shale, and silty clay shale. The Harrell Formation contains clay shale and silty clay shale and the Mahantango Formation contains claystone and limestone.
|
|
It consists of silty, well drained, gravelly, and deep soil that rests on gabbro and granodiorite bedrock. The Chester-Glenlg-Manor soil association is prevalent through the middle of the watershed. It consists of silty, channery, and shallow to deep soil that rests on brown schist and gneiss bedrock. Most of the watershed is considered to have slightly erodible soil.
|
|
Dangers include cold, swift, silty water, and braided channels. Glacier melt may cause flow rates to rise significantly between morning and afternoon on warm days.
|
|
Epinephelus sexfasciatus is found on silty or muddy bottoms down to depths of . The species has a diet made up of small fishes and crustaceans.
|
|
Areas of the streambed where bedrock is not exposed and no imbricated rocks have settled are generally covered in a fine red lacustrine silty clay.
|
|
It often occurs in areas where a layer of sediment covers the rocks, or on large pebbles lying on a silty or broken shell seabed.
|
|
Once we kedged our way off a mud bar on the Mystic River, the silty anchor tossed again and again till our boat glided free.
|
|
It consists of silty, channery, and shallow to deep soil that rests on brown schist and gneiss bedrock. The Urban Land-Wetbrook-Pitts soil association is prevalent in the southern part of the watershed. It consists of silty, sandy, and deep soil that rests on coastal sediments. Roughly 53% of the land in the Darby Creek watershed is classified as having slightly erodible soil.
|
|
This is mostly cohesive soil (silty clay) and silty sand, horizontally stratified. At −21 m there is a dense layer of fine sand, which provides good support for piles and foundations. although in newer construction, piling usually extends to −36 m or beyond. Bedrock is not reached at engineering depths (shallowest seams are 180 m) Seismological Conditions: The area of Tianjin is very seismically active.
|
|
The northern part of West Bengal is covered by fans of sediment washed down from the Himalayas. The Baikanthapur formation is the youngest fan in the area. It consists of very fine white sand inter-layered with ochre yellow sticky silty clay and overlain by dark grey to thick silty loam. The Shangaon formation represents the deposits of the flood plain faces of the Baikunthapur formation.
|
|
The Blacktip soldierfish inhabits protected waters at depths between 25 and 71 meters, usually in silty reef areas and well developed coral reefs with clear water.
|
|
It has a porosity ranging from 16% to 30% and a permeability of 360 millidarcies. The shallow section contains silty, bioturbated sands with poor reservoir quality.
|
|
The Muskiki Formation is composed of shale with pebbly mudstone. Poorly sorted sandstone and concretionary beds also occur. In the western areal it becomes more silty.
|
|
The Smoky Group is represented by marine silty shale with ironstone and bentonite streaks. Sandstone occurs at the base, and is transitional to the Dunvegan Formation.
|
|
It is predominantly a glauconitic fine-grained sandstone, locally becoming silty. Fragmenary dinosaurs remains such as those assigned to Iuticosaurus, have been recovered from this formation.
|
|
Epinephelus heniochus is found at depths from over substratces consisting of mud or silty sand. There is almost no published information on the biology of this species.
|
|
The Mangapai River is a river of the Northland Region of New Zealand's North Island. It is perhaps better described as a silty arm of Whangarei Harbour, located due south of Whangarei. Its average width is some , but the silty nature of its course means that the stream itself is far narrower. The New Zealand Ministry for Culture and Heritage gives a translation of "good stream" for Mangapai.
|
|
Classified as coarse-silty, mixed, superactive, thermic typic eutrudepts: Natchez soils are in the Inceptisols soil order. Inceptisols soils have developed in relatively young material that have an Ochric epipedon is rich in weatherable minerals. The term coarse-silty indicates that the subsoil has less than 18 percent clay with less than 15 percent sand coarser than very fine. The term mixed suggests that no one mineral is over 60 percent.
|
|
Bearpaw shale being excavated to recover ammonites for ammolite production. The formation was deposited in the Bearpaw Sea, which was part of the Western Interior Seaway that advanced and then retreated across the region during Campanian time. It is composed primarily of dark grey shales, claystones, silty claystones and siltstones, with subordinate silty sandstones. It also includes bedded and nodular concretions (both calcareous and ironstone concretions) and thin beds of bentonite.
|
|
The Smackover Formation is a geologic formation in Arkansas. It preserves fossils dating back to the Jurassic period. The Smackover Formation consists of oolitic limestones and silty limestones.
|
|
At the southern limit of its outcrop the Cottonwood Limestone is a medium crystalline limestone with thin, shelly layers. Mollusks, Osagia, and quartz silt are common (silty Osagia facies).
|
|
Adults prefer to inhabit protected muddy tidal streams where they forage in the silty substrate, while other species of whiting in the range move to open tidal sand flats.
|
|
The ecoregion is underlain by unconsolidated glaciofluvial deposits, silty alluvium, silty and clayey marine sediments and glacial till. Bedrock outcrops of Mesozoic and Palaeozoic origin form rolling hills up to about 310 metres above sea level. The Fraser River dominates this lowland. Gleysols, Mesisols, and Humisols are the dominant wetland soils in the region, while Eutric and Dystric Brunisols and some Podzols have developed on sandy to loamy outwash and glacial till in the uplands.
|
|
The mudflats accumulated soil, as well as streams that formed silty crevasse splay deposits. Type B cycles were similar to type A cycles but were thicker and differed in other ways. The basal black shale is richer in coal and grades into siltier brown mudstone and then interbedded layers of siltstone, sandstone, and silty mudstone. The top of a cycle is characterized by a thick layer of rippling cross-bedded sandstone filled with rootcasts.
|
|
It does better in generally cooler climates. Usually it is adapted to clay, silt, loam, silty clay, sandy clay, clay loam, silt loam, sandy loam, silty clay loam and sandy clay loam soils, and prefers low fertility. The plant can tolerate only a minimum temperature of -28 °C / -18.4F after the occurrence of cell damage. It can survive medium heat of fire and requires at least 90 frost free days for proper growth.
|
|
The sites natural underlying subsurface conditions were stiff silty clay below a medium dense sand layer, which was determined to be too accommodating to settlement to host the structure. Ground improvement, consisting of triple-fluid jet grouting, was performed to reduce the compressibility of the silty clay, stiffen the sand deposit and provide a desirable shallow foundation system. This site marked the first time that these geotechnical ground improvement techniques were employed.
|
|
Notably, the area is home to many types of wildflowers that blossom throughout the year but especially in the spring. This includes the popular bluebonnets, some planted by "Lady Bird" Johnson, wife of former President Lyndon B. Johnson.Baird (2009), p. 225. The soils of Austin range from shallow, gravelly clay loams over limestone in the western outskirts to deep, fine sandy loams, silty clay loams, silty clays or clays in the city's eastern part.
|
|
The soil in the watershed is primarily loam with some silty loam. The soil pH varies from about 4.85 to 5.45. Portions of the area are characterized by karst topography.
|
|
Epinephelus bleekeri is a benthic species which can ben found on shallow banks and nearby areas with soft substrates as well as in silty coastal reefs and estuaries at depths of .
|
|
Kayentachelys ("Kayenta turtle") is an extinct genus of turtle known only from the "silty facies" of the Lower Jurassic Kayenta Formation in northeastern Arizona on the lands of the Navajo Nation.
|
|
This is the only site in Columbia County where organic soils have been observed. Mucky peat is formed from plant matter such as sedges, mosses, and leaves that are laid down in permanent bodies of water. The top of a typical mucky peat soil consists of black, silty peat that is highly fertile, but too wet to till. Below this layer is a subsurface layer lies a wet, silty muck that is dark gray in color.
|
|
These deeply weathered sediments are unfossiliferous and characterized by the presence of weathering products like kaolinite and montmorillonite. Saalian sediments uncomfortably overlie this paleosol. The oldest known Pleistocene sediments exposed in the southern sea cliffs of Bolshoy Lyakhovsky Island consist of Saalian sediments, which accumulated between 200,000 and 120,000 years ago. The lower part of these sediments consist of ice-rich, silty and silty-sandy sediments that accumulated as a Saalian ice complex between 200,000 and 170,000 years ago.
|
|
It grows in freely draining soils such as silty and sandy loams, typically on sites which receive a high amount of sunlight. It also establishes readily on disturbed sites such as roadsides.
|
|
Their burrows, however, are usually excavated in silty, sandy, or gravelly soil and are used for refuges, seed storage, and neonatal care. The average lifespan of C. penicillatus is around one year.
|
|
While the Middle member consists of silty mudstones, sandstones and conglomerates containing volcanogenic clasts and is richly fossiliferous, while the upper member consists of matrix supported red conglomerates and is poorly fossiliferous.
|
|
P. alabamae occurs in cave pools with silty bottoms. Predators of the Alabama cave shrimp include the southern cavefish Typhlichthys subterraneus, the Tennessee cave salamander Gyrinophilus palleucus, various crayfish species, bullfrogs and raccoons.
|
|
The oval grouper has been recorded over on rocky or soft bottoms, consisting of sand or silty mud, at depths of . The juveniles are known to feed on zooplankton in the water column.
|
|
The preferred habitat of T. sistanensis is a hot and dry climate, with flat sandy soil interspersed with patches of gravel or loamy-silty soil, and sparse vegetation mainly of the genus Tamarix.
|
|
Soil texture triangle, showing the 12 major textural classes, and particle size scales as defined by the USDA. In the United States, twelve major soil texture classifications are defined by the United States Department of Agriculture. The twelve classifications are sand, loamy sand, sandy loam, loam, silt loam, silt, sandy clay loam, clay loam, silty clay loam, sandy clay, silty clay, and clay. Soil textures are classified by the fractions of each soil separate (sand, silt, and clay) present in a soil.
|
|
Two possibilities exist for the origin of the name of the river. It may be from either Ojibwe bikodinaa or French meaning "be a high ground" for the promontory found at the mouth of the river, or from the corruption of the Ojibwe "pekatek" or "mud",words referring to "mud" in Ojibwe contain either /jiishkiwag/ or /zhashki/; more likely from "silt" containing /bakwebii/, possibly forming bakwe _biigotig_ weyaa or some similar variation meaning "silty river-water" which describes its silty water.
|
|
The formation is highly variable in lithology, consisting of interbedded black to reddish sandy, silty, or calcareous shale; brown to olive calcarious siltstone, brown to gray calcareous arkosic sandstone; gypsum; and gray argillaceous to silty limestone. It varies in thickness from . It overlies the Lead Camp Limestone or Bishop Cap Formation and is overlain by the Hueco Group.Kues and Giles 2004 The unit likely correlates with Bar B Formation in the Caballo Mountains and the Holder Formation in the Sacramento Mountains.
|
|
As its common name suggests, T. vagina lives in burrows in the silty or muddy bottoms of estuarine and coastal areas. It is omnivorous, mostly preying on small crustaceans that wander near its burrows.
|
|
On thebank of the Yoho River The Yoho River is a silty, swift tributary of the Kicking Horse River in the Canadian province of British Columbia. The river is entirely within Yoho National Park.
|
|
Typical Puget Sound profiles of dense glacial till overlying permeable glacial outwash of gravels above an impermeable bed of silty clay may become unstable after periods of unusually wet weather and slump in landslides.
|
|
The current is weak. The bottom is silty-clayey, sometimes sandy-clayey. The left bank is an elevated, steep, sandy, 1.5 - 2.0 m high, covered with forest. Riverbed aquatic communities and floodplain deciduous forest.
|
|
Cephalopholis formosa is found in shallow waters over silty or dead reefs. It is a solitary species. It is found at depths between . It is a predatory species which feeds on other fishes and crustaceans.
|
|
The Kakisa Formation is composed of silty and dolomitic limestone. Reef builders such as corals and stromatoporoids can be identified in the formation. It is refoid in its northern extent, where its thickness is variable.
|
|
The southern stargazers are benthic marine fish that are reef-associated. They live most of their lives inshore. Stargazers can be found at depths of in areas that have sandy, silty, or soft rubble bottoms.
|
|
The formation overlies the Knorringfjellet Formation and is overlain by the Rurikfjellet Formation. The formation comprises the lower Oppdalsåta and upper Slottsmøya Members The sediments comprise mudstones, dolomites and shales deposited in an open to deep marine low oxygen environment. The Slottsmøya Member, which averages in thickness in the study area, consists of dark-grey to black silty mudstone, often weathering to paper shale, and discontinuous silty beds with local occurrences of red to yellowish sideritic concretions as well as siderite and dolomite interbeds.
|
|
Measuring the length of the ribbon can help determine the amount of clay in the sample. After making a ribbon, excessively wet a small pinch of soil in the palm of the hand and rub in with the forefinger to determine the amount of sand in the sample. Soils that have a high percentage of sand, such as sandy loam or sandy clay, have a gritty texture. Soils that have a high percentage of silt, such as silty loam or silty clay, feel smooth.
|
|
The Upper Gondwanas are further subdivided into the Taltung and Amile formations. The Taltung Formation is characterised by coarse-grained, volcaniclastic conglomerates, sandstones and silty shales. They were deposited by northwestward-flowing fluvial channels.Sakai, H. (1991).
|
|
The Yampa's warm, silty waters are an ideal spawning ground for native fish such as the Colorado pikeminnow and humpback chub which have largely disappeared from dammed waterways in other parts of the Colorado River system.
|
|
It grows very slowly in clay, silt, loam, silty clay, sandy clay etc. types of soil. Its minimum pH scale is 6 and maximum pH scale is 7.5. It grows erectly in a 'single crown' form.
|
|
Secondary rock type is clay or mud. Other rock types include slit and lignite. "Light gray to buff, medium- to very fine-grained silty sand, interbedded with light gray clayey silt." From the Tertiary geological age.
|
|
Substantial base flow in streams rounds the year. The soil in lake area is silty clay loam to clay loam. Lake water is fresh with insignificant pollution with a depth varies from 2 m to 9m.
|
|
The Whakaki River is located in the Northland Region of New Zealand's North Island. Despite its name, it is better described as a silty arm of the Kaipara Harbour. It flows northwest to reach the Arapaoa River.
|
|
It is also the main reason why the lower reaches of the Chilcotin are very silty. The Chilko gets most of its silt from the Taseko River, which joins it a few kilometers above the Chilko's mouth.
|
|
The clay-richer parts are relatively dense and difficult to be rooted. These characteristics make the Retisols also unattractive for many soil animals, especially earthworms. Retisols have typically sandy or silty topsoils that are prone to erosion.
|
|
The main soil in the area of Fishing Creek belongs to the Albrights series, which contains a layer of sticky, reddish-brown, gravelly silt loam. Below this is a layer of yellowish- red, gravelly, silty clay loam, which extends to approximately below ground and lies over a layer of equal portions of gravel and silty clay loam. Bedrock occurs several feet below the surface. The top of the Leck Kill-Meckesville- Calvin series in the watershed is dark brown silt loam with small pieces of sandstone and shale.
|
|
550 The late Sinemurian Pankarp Member has an estimated thickness of up to in the subsurface of the Ängelholm, Helsingborg and Landskrona areas. In the Kävlinge area, the thickness is about thick. In westernmost Skåne, the member has been observed in small diameter drill cores. There, the member is subdivided into a lower unit of variegated clays and shales, a middle, poorly sorted silty to sandy unit including a coal bed, and an upper monotonous mudstone unit which is silty and rich in organic matter at the base, and reddish–greenish at the top.
|
|
Kayentachelys is known only from the "silty facies" of the Kayenta Formation in northeastern Arizona. The Kayenta Formation is a stratigraphic unit within the Triassic-Jurassic Glen Canyon Group, which crops out across the Colorado Plateau. Despite extensive outcrop of the "typical facies" of the Kayenta Formation in Utah, Colorado, and northern Arizona, vertebrate fossils are rare in these regions. Vertebrate fossils from the "silty facies" of the Kayenta Formation are most abundantly known from Ward Terrace along the Adeii Eechii Cliffs southeast of Tuba City, AZ on the lands of the Navajo Nation.
|
|
23, The Geological Society, p.22. . the Chillesford Church Member (a basal deposit of marine sand, formerly the Chillesford Sand Member); the Chillesford Member (micaceous, silty clays overlying the Church Member, formerly the Chillesford Clay Member); the Creeting Member (micaceous, inter- tidal sands); the College Farm Member (silty clay of mud flats associated with the Creeting Member); the Easton Bavents Member (clay with sand laminae); the Westleton Member (flint-rich gravels overlying the Easton Bavents Member). The type site of the Formation is at Bramerton Pits SSSI, near Norwich.Reid, C (1890).
|
|
Up Marden lies on the chalk escarpment of the South Downs at an elevation from about to .Ordnance Survey 1:50,000 series sheet 197 The hills are part of the Southern England Chalk Formation of rocks laid down during the Late Cretaceous period around 66 to 90 million years ago. Soils are of the Andover 1 association consisting of shallow silty calcareous well drained soils which overlie chalk on the slopes and ridges of the hills. Deeper calcareous or non-calcareous fine silty soils occur in the dry valleys.
|
|
Ophiclinus gracilis, the Black-back snake-blenny, is a species of clinid native to the coastal waters of southern Australia where it prefers areas with rotting vegetation on silty substrates. It can reach a maximum length of TL.
|
|
Felspar and quartz may be present. This mineralogy indicates that Bald Hill Claystone is unlikely to swell. Typically this rock type is a chocolate brown to red brown colour, with bands of silty grey, or sandy greenish grey.
|
|
Modified flutter kick, or high flutter kick, is an adaptation where the knees are bent, so that the fins point slightly upwards, and is suitable for confined spaces and silty conditions, as the thrust is not directed downwards.
|
|
M.McGinley & C.J.Cleveland. National Council for Science and the Environment. Washington DC It is also found in wet stands of black spruce, Sphagnum bogs, silty and boggy shorelines and wet sands. It prefers open, sunny or partly sunny habitats.
|
|
M. papilio lives in benthopelagic marine environments of the northern Pacific Ocean and the Sea of Okhotsk, in sandy or silty flat areas. It is usually found at depths of and water temperature from −0.9 to 10.7 °C.
|
|
The natural habitat of this snail is freshwater lakes. Tanganyicia rufofilosa lives in depths 5–25 m on silty and sandy bottoms, in high population densities. The females are viviparous. In 1996, this was considered an Endangered Species.
|
|
Fossil in the Museo Civico di Storia Naturale di Milano. This specimen clearly shows the eye bar structure. The formation of the Mazon Creek fossils is unusual. When the creatures died, they were rapidly buried in silty outwash.
|
|
The pink-speckled shrimpgoby (Cryptocentrus leptocephalus) is a species of goby native to the western Pacific Ocean where it occurs on silty substrates in coastal reefs, lagoons, mangrove swamps and tide pools. It grows to a length of SL.
|
|
The dust concentration has a peak of ~3 mg/kg at 200 m above bedrock (depth 1837 m), second only to the silty ice (>20 mg/kg) of the bottom 25 m, which has a very high deformation rate.
|
|
The Staithes Sandstone Formation is a geological formation in North Yorkshire, England. Part of the Lias Group, it is Pliensbachian in age. The lithology consists of silty sandstones, with varying argillaceousness. Typically intensely bioturbated and with many bedding structures.
|
|
The area's sandy and silty soil makes it vulnerable to pugging and soil compaction. The Ministry for Primary Industries held a public meeting in the township in October 2019 following several new Waikato cases of the cattle disease Mycoplasma bovis.
|
|
The shales are sparsely fossiliferous and contain some conodont elements, ostracods and brachiopod shells. The upper member consists of brown-weathering, medium- to thick-bedded, calcareous and dolomitic siltstones with subordinate silty limestones.Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol.
|
|
Epinephelus corallicola is found in a variety of habitats from silty shallow reefs to clear waters on the outer reef slopes, at depths between . It is some times found in estuaries. The biology of this species has been little studied.
|
|
The Halgaito Shale is the basal Permian geologic member of the Cutler Group in southern Utah. The member consists of silty sandstone, siltstone and limestone. The Elephant Canyon may grade into the Halgaito and grades northward into the Cedar Mesa Formation.
|
|
The Ravenscrag Formation is an eastward-thickening wedge of sediments. It is composed primarily of buff, grey and white silty claystone, with mudstone, siltstone, sandstone, and it includes several significant coal seams. Glass, D.J., editor, 1997. Lexicon of Canadian Stratigraphy, vol.
|
|
L. koreni is found in the seas bordering northwestern Europe including the Arctic Ocean, the Atlantic Ocean, the North Sea, the Mediterranean Sea and the Adriatic Sea. It is usually found buried in sand or silty sand in the neritic zone.
|
|
The Upper Tunbridge Wells Sand is similar to the Lower Tunbridge Wells Sand. It comprises soft red and grey mottled silts and clays in its lower part, and alternating silts and silty clays with thin beds of sandstones. The base of the Tunbridge Wells Sand is marked by a distinct change from the predominantly argillaceous sediments of the Wadhurst Clay to siltstones and silty sands. This boundary is often indicated on maps by spring lines and seepages, where groundwater percolating through the permeable Tunbridge Wells Sand is forced to surface at the junction with the Wadhurst Clay.
|
|
Clear Lake clay is dark gray in appearance and manifests a fine to medium granular structure, most commonly supporting hay production in the Bennett Valley. In addition, Zamora silty clay loam is found in several large patches on the valley floor; Zamora silty clay loam is a grayish brown firm, sticky and plastic soil type and is also characteristic of alluvial fans; it has a neutral pH and occurs at minimum depths of about two meters. Due to the economic demand for wine grapes in this region, pressure began in the 1980s to develop some of the Bennett Valley soils for viticulture.
|
|
The main excavation of the deep channel () in East Bay appears to be a consequence of glacial erosion, probably over hundreds of thousands of years through the Quaternary. The cliffs bordering the lake are unusual because they preserve organic sediments predating the last glaciation that provide a window on earlier environmental conditions. The morphology of the lake floor is influenced by the deposition of glacial till and pre-glacial silty muds that occurred during the last retreat of ice. A series of recessional moraines are visible on the floor of East Bay, with pre-glacial silty muds thickening eastward.
|
|
The orangespotted goby (Nes longus) is a species of goby native to the tropical Atlantic coast from Bermuda and southern Florida through the Caribbean Sea and Gulf of Mexico south to the Caribbean coasts of Venezuela and Colombia, where it prefers silty bottoms around reefs. It is a commensal with an alpheid shrimp. This species grows to a length of TL. This species is the only known member of its genus. This species is symbiotic with snapper shrimp Alpheus floridanus, sharing the burrow with the shrimps, usually a pair, on unvegetated silty substrates in waters of less than depth.
|
|
The Hollebeke Formation was deposited in a marine environment and ranges in thickness from about 100 to 240 m (328 to 787 ft). The lower part consists of locally silty or argillaceous dolomite and limestone. The upper part is very fine crystalline limestone.
|
|
The Whakarapa River is a river of the Northland Region of New Zealand's North Island. Despite its name, it is probably better described as a northern silty arm of the Hokianga Harbour, which it meets 15 kilometres northeast of the latter's mouth.
|
|
These silty materials eventually buried the carbonates as prograding deltas developed in the Early Cretaceous. Within these deltaic sequences, a number of shale units were deposited.Davison, I., 2005. Central Atlantic margin basins of North West Africa: Geology and hydrocarbon potential (Morocco to Guinea).
|
|
Arizona Game and Fish Department Heritage Data Management System. Castilleja kaibabensis grows in meadows between stands of spruce, fir, and aspen. The soils, derived from Kaibab limestone, are silty, clayey, or rocky. The plant tends to grow in drier spots in the habitat.
|
|
It usually prefers muddy substrates at depths of about , although adults often are seen over silty sand bottoms with stones, commonly near kelp, at depths of in Franz Josef Land. The species is common, at least around Greenland and at Franz Josef Land.
|
|
The Narragansett soil series consists of coarse-loamy over sandy or sandy- skeletal, mixed, active, mesic Typic Dystrudepts.NARRAGANSETT SERIES, National Cooperative Soil Survey. They are well drained, loamy soils that formed in friable (ablation) glacial till mantled with a silty loess cap.
|
|
IUCN Red List of Threatened Species. Version 2012.2. Downloaded on 05 June 2013. The species lives mainly in coral and rocky areas, in shallow to moderate depths (forty feet), though it is more often in silty reef areas than in rich coral growth.
|
|
Background are the cranes of the Huicheng terminal. # A layer of artificial fill from +4.6 m to +2.0 m of elevation. On older parts of the Port, this layer was placed by jetting dredged material, which made the dredged silty clay finer.
|
|
The region is located in the West Siberian Plain, consisting of mostly flat terrain. In the south is the steppe, gradually turning into steppe, forest and swampy taiga to the north. The soil is sandy and silty. Along the Irtysh River, in t.
|
|
Agrimonia parviflora prefers moist and wet grounds and is found in swamps, woodlands, prairies and roadside ditches. Harvestlice prefers full sunlight and can grow in most soils, including sandy and silty. Often referred to as swamp agrimony. Plant is found throughout Ontario, Canada.
|
|
The sleepy goby occurs in the intertidal zone in estuaries, lagoons and coastal rivers, often amongst mangroves where it burrowing into the silty-sand substrate, it may also be found in the lower reaches of freshwater streams. It buries itself in the sand.
|
|
Corn and soybeans are the principal crops grown in Drummer soil. The average annual precipitation in areas of Drummer soil ranges from 32 to . The average annual air temperature ranges from 48 to . Drummer is a fine-silty, mixed, superactive, mesic Typic Endoaquoll.
|
|
It found in drains and swamps and on the margins of brackish lakes and creeks along coastal areas in the Mid West, Wheatbelt, Peel, South West, Great Southern and Goldfields-Esperance regions where it grows in muddy-silty to clay-sandy soils.
|
|
The formation is mostly calcareous reddish- brown siltstone, which makes up 72% of the type section. The remainder is mostly conglomerate with only minor silty mudstone. The conglomerate is primarily Paleozoic limestone with lesser amounts of granite. Total thickness is estimated at .
|
|
Abra alba is found on the coasts of northwest Europe and the Mediterranean Sea at depths down to . It is common around the British Isles and in the North Sea. It prefers fine, silty sand, but is also found in mud or gravel.
|
|
The Jean Marie Member is designated as the lower part of the Redknife Formation where it is represented by massive limestone or silty carbonates. The Jean Marie Member was deposited during the Frasnian age. It is named for the Jean Marie River.
|
|
It was occupied about 800 years ago. Used for no more than 200 years; occupied intensively occasionally rather than continuously. Cultural layers are strongly alkaline. Cultural sediments are mostly clay and silty foam with some debris from the roof of the cave.
|
|
The Alexo Formation was deposited in a marine setting and consists of dolomite, silty and argillaceous dolomite, dolomitic siltstone, and vuggy dolomite. It has a maximum thickness of about , and is thinner in areas where it covers carbonate buildups (reefs) in the underlying formations.
|
|
Marysvale Canyon is also known for its trout during the non-irrigation (low water) season, being located in the tailwater of Piute Dam. Fishing is generally poor downstream of Marysvale Canyon due to the warm silty water, numerous diversion structures and degradation of riparian habitat.
|
|
The meadow is acid grassland of a type which is now uncommon, and there are also areas of neutral grassland and marsh on silty peat. There are many ant hills of the yellow meadow ant. There is (unsignposted) access from the Knightley Way footpath.
|
|
Boltenia echinata occurs in the northern Atlantic Ocean and the Arctic Ocean. The range includes the coasts of Scotland and the Irish Sea, but not southern Britain. It is usually found in fairly sheltered silty habitats, attached to solid substrates at depths down to about .
|
|
The Alberta Group is composed of silty shale for the most part. Two thick shale deposits (Blackstone Formation and Wapiabi Formation) are present above and below a sandstone sequence (the Cardium Formation). Sideritic concretions and thin argillaceous limestone beds are present within the shale stacks.
|
|
It is a marine, tropical eel which is known from the eastern Indian Ocean, including the Nicobar Islands in India, and Andaman Island. It is known to dwell at a maximum depth of , and inhabits silty sediments. Males can reach a maximum total length of .
|
|
The Lockatong is defined as a light to dark gray, greenish-gray, and black very fine grained sandstone, silty argillite, and laminated mudstone. In New Jersey, the cyclic nature of the formation is noted with hornfels near diabase and basalt flows.Orndorff, R.C., et al., (1998).
|
|
Charlton Member outcrops in just one location, that being northern Nassau County, Florida near and along the St. Mary's River. Here it consists primarily of light gray to greenish gray, poorly to moderately consolidated, dolomite bearing to calcareous, silty, sandy, with few carbonate beds.
|
|
The formation consists of gray shale with some interbedded siltstone and silty limestone, with some fine grained sandstone towards the top of the formation. The total thickness is . It rests conformably on the Del Norte Formation and is conformably overlain by the Muleros Formation.
|
|
There is significant contrast from the silty nature of the Middle Lias, Marlstone Rock bed with the Junction Bed of the coast of Dorset and the Midlands ironstones. This contributes significantly to the reconstruction of the geography and the environment of the early Jurassic period.
|
|
The Motuti River is a short, wide river in the Northland Region of New Zealand's North Island. More a silty arm of the Hokianga Harbour than a true river, it flows south from the settlement of Motuti to the main channel of the Hokianga west of Rawene.
|
|
The Ancholme Group is a geologic group in England. It preserves fossils dating back to the Jurassic period. It has previously been referred to as the Ancholme Clay Group. The group consists of predominantly grey, marine mudstone and silty mudstone with beds of argillaceous limestone nodules.
|
|
This species reaches up to 2 cm (0.9 in) in standard length. They are found in low-movement waters with a slow current and a muddy, silty, or sandy bottom. They prefer clear waters with submerged vegetation. Black spots occur on the base of its dorsal fin.
|
|
It dwells at a depth range of , and inhabits regions with dark, silty sand and seagrass of the genus Holiphila. Males can reach a maximum total length of , while females can reach . Enigma garden eels are harmless to humans and are medium to dark brown in colour.
|
|
Volcanic rocks dredged from Erimo Seamount include alkali basalt, brecciated basalts, silty sandstone, trachyandesites or trachytes. During the Cretaceous, carbonate rocks were emplaced at shallow depth on the seamount, which subsided by about . As the seamount has entered the trench, further subsidence of about has taken place.
|
|
Hrvatske autoceste, operator of the motorway, defended the price as a result of unfavorable, silty ground along the route requiring large quantities of backfill and transportation of the backfill material. Furthermore, Hrvatske autoceste rejected the claims of cost per kilometer of the A11 and the A1.
|
|
Copperband butterflyfish are found at depths of 1−25 metres either alone or in pairs. These fish form monogamous pairs during breeding. They are usually found on coral reefs or rocky shorelines, and also in estuaries and silty inner reefs. This species is territorial and oviparous.
|
|
Leopard flounder is a benthic species living on the bottom of a sea. It inhabits sandy or silty sand, and muddy bottoms of inner reef flats. It is often partially buried in or on the sand of lagoons, bays and sheltered reefs, at a depth of .
|
|
Broch, E. 1979. Changes in rock strength by water. Proceedings of the IV. International Society of Rock Mechanics, Montreux, vol. 1, 71-75 These data show that when silty sandstone is saturated, the rocks are more susceptible to breaking, which is one way landslides can be triggered.
|
|
Fertilizers are needed for good yields. In climates with long dry periods and short infrequent wet spells the best land use are grasslands. Strongly developed Planosols with a very silty or sandy surface soil are best left untouched. Planosols cover an estimated 130 million hectares of the world.
|
|
The Lower Greensand is a predominantly arenaceous sandstone consisting of sediment that accumulated apparently in a shallow sea in the later part of the Lower Cretaceous.Friend (2008), p.171. It also contains important subsidiary elements of silty and argillaceous material. Chert, ironstone and calcareous deposits occur in small amounts.
|
|
In the Pleistocene period, of 12.9 k a to 11.6 k a, the rivers re-formed into single channels, and meanders were formed. These became very distorted above the constrictions of the gorges. Down cutting occurred, exposing previous layers, creating terraces that were covered with silty clay alluvium.
|
|
In Tennessee, the spawning occurs in slow moving, silt covered gravel areas in the Stones River below the Walter Hill Dam or in the silty sand substrate of the Mississippi River in northwest part of the state.Pflieger, W. L. 1975. The Fishes of Missouri. Missouri Department of Conservation.
|
|
Halothamnus beckettii is endemic to Somalia. It is a rare species, known just from a few sites. I grows in dry places (with yearly precipitation of 100–200 mm) among scattered dwarf shrubs or grasses on plateaus or slopes, on limestone or silty sand, up to 700 m.
|
|
The calcareous particles include coccoliths, bivalve, and gastropod fragments, and calcispheres. Organic matter in the form of amorphous kerogen coats the argillaceous material. Silty, calcareous mudstones contain more than 20% calcite. In these mudstones, the calcite occurs as silt-sized microfossil hash composed of fragmented fossils and carbonate mud.
|
|
The habitat of the oriental trumpeter whiting is largely unknown, but it's known to live in inshore coastal waters, commonly in embayments on silty bottoms in water depths from 0 - 60m depth. Juveniles often enter the surf zone of beaches, mixing with juveniles from other species of Sillago.
|
|
Hadiya Khola also runs from north to south, but close to the eastern border. The area close to the two streams is mainly composed of gravel, boulder, and sand. However, the rest and much of Budhabare is primarily composed of silty loamy soil, which is ideal for agriculture.
|
|
These materials included several varieties of clay in several colours such as chalky, pale silty and yellowish brown, as well as flinty gravel. Samples of charcoal were taken which allowed for radiocarbon dating, and it is these pieces that provided the age of the mound as a Neolithic construction.
|
|
View of the shoreline formations of Stolbovoy Island. Note the polygons on the lower left and the conical mounds along the seashore. Baydzharakh (), a term based in the Yakut language, is a roughly cone-shaped natural rock formation. They are usually composed of siltstone, silty peat or loam.
|
|
Breakdown in soil and groundwater: Dicofol is moderately persistent in soil, with a half-life of 60 days. Dicofol is susceptible to chemical breakdown in moist soils. It is also subject to degradation by UV light. In a silty loam soil, its photodegradation half-life was 30 days.
|
|
The source region for this loess is thought by some scientists to be areas of fluvio- glacial deposits the Andean foothills formed by the Patagonian Ice Sheet. Other researchers stress the importance of volcanic material in the neotropical loess. The pampean loess is sandy or made of silty sand.
|
|
The shorter trip requires no portage. Hazards include cold silty water, bad weather, and the remote location. Grizzlies pose a danger to boaters, especially near the mouths of clear tributaries, where the bears tend to congregate. A variety of salmon, attractive to bears, migrate to and from these tributaries.
|
|
Largely for this reason the Cree estuary "The silty Cree" is a Site of Special Scientific Interest. The remaining bridge downstream of Newton Stewart is the bridge, built in 1979 as part of the A75 trunk road bypass. Before there were proper roads, and before the railway came to Galloway in the 19th century, bulky goods such as coal and fertilisers, gravel and grain, timber and stone, were transported by sea. The Cree has a winding, silty estuary, not good for navigation, but there was a harbour at the Carty Port, a couple of miles south of Newton Stewart, and others further down the estuary at Wigtown and Creetown from which coastal cargoes were traded.
|
|
Eventually the climate became drier and cooler. The area passed through more long periods of geologic time, during which new sedimentary layers buried this entire sandy silty layer along with its deposits of peat, under thousands of feet of newer sediments, compressing the sandy silty deposits into the Tongue River sandstone of today, and also compressing and changing the layers of peaty organic material into thinner layers of lignite coal. Over the last several million years, much of the overlying sediment has eroded away, bringing the sandstone layer with its seams of coal to the surface again in the Tongue River area. The Tongue River sandstone forms cliffs, hills, buttes and bluffs along the river and throughout the basin.
|
|
Enekbatus planifolius is a shrub endemic to Western Australia. The spreading shrub typically grows to a height of . It blooms between September and October producing pink flowers. It is found on gentle slopes in the Mid West region of Western Australia around Morawa where it grows in sandy-silty soils.
|
|
Lake populations predominantly occur on silty or peaty substrates, growing at depths up to at least 3.5m. In deeper water it reproduces vegetatively by stolons or production of cleistogamous seed. This often results in populations with low genetic diversity. Shallow water populations produce short-lived flowers which may cross-pollinate.
|
|
These basalts have ages between 2.1 and 4.4 Ma. The Dry Valley Drilling Project (1971–75) determined the Pleistocene layer within the Taylor Valley was between 137 and 275 m thick, and composed of interbedded sandstones, pebble conglomerates, and laminated silty mudstones. This Pleistocene layer disconformably overlies Pliocene and Miocene diamictites.
|
|
The Kortrijk Formation consists predominantly of clay, sometimes sandy or silty. The formation generally becomes sandier to the east, in Brabant and the Campine area. In some places fossils or bioturbation occur. In the westernmost part of Belgium it can be thick, but it gradually wedges out to the east.
|
|
It is found in most Australian mainland states and territories including Western Australia, Northern Territory, South Australia, Queensland, New South Wales and Victoria. In Western Australia it is found along stream and creeks and around clay pans in the Pilbara and Kimberley regions where it grows in loamy-silty soils.
|
|
The slender hagfish (Neomyxine biniplicata) is a species of hagfish endemic to New Zealand. It is known from along the east coast, from the northern end of the Bay of Plenty to Kaikoura at depths of 35–396 m, and is found on silty to coarse sediments and rocky seabeds.
|
|
Themiste hennahi is native to the tropical and subtropical eastern Pacific Ocean, its range including the western coast of the United States, and the coasts of Peru and Chile. It burrows into sandy, gravelly, silty and muddy substrates in the intertidal zone, including eelgrass beds, and conceals itself under loose rocks.
|
|
D. geniculatus subsp. geniculatus is found on leached sandy and sandy/silty clay soils and occurs in at least one protected area (Bako National Park). D. geniculatus subsp. grandis occurs on similar soils as well as those over ultrabasic rock and occurs in at least one protected area (Lambir Hills National Park).
|
|
The Mangamuka River is a river of the far north of the Northland Region of New Zealand's North Island. It flows generally south from the Maungataniwha Range southeast of Kaitaia, and the last few kilometres of its length are a wide, silty arm of the Hokianga Harbour, which it reaches northeast of Rawene.
|
|
Various sediments were emplaced in the lake, including adularia, clay, gravel and zeolites. Some of these formed when ash or sediments were progressively altered. The sediments take the form of calcareous, sandy, silty material or mudstone. The sediments have undergone increasing amounts of diagenesis the closer they are to the basin center.
|
|
The Threebear series consists of moderately well drained soils formed in silty sediments with a thick mantle of volcanic ash. These soils are moderately deep to a fragipan. The name “Threebear” is derived from a creek in Latah County, Idaho. These soils are on hills with slopes of 5 to 35 percent.
|
|
The plant generally produces only 1 flower head per stem. Each head has 25–60 blue, pink or white ray florets surrounding numerous yellow disc florets. The species grows in dry places with silty or gravelly soil, sometimes high in salt, selenium, or gypsum.Flora of North America, Erigeron pulcherrimus A. Heller, 1898.
|
|
Further debris and bodies, still trapped in the partly intact remains of the aircraft's fuselage, were at a depth of . The debris was found lying in a relatively flat and silty area of the ocean floor (as opposed to the extremely mountainous topography originally believed to be AF447's final resting place).
|
|
Coral reefs have been damaged recently by silt and mud runoff during construction of a road along the northeast coast. There has also been damage to the reef in Charlotteville village caused by sealing the road at Flagstaff Hill and diverting more silty water down the stream from Flagstaff down to Charlotteville.
|
|
Palafoxia riograndensis, the Rio Grande palafox or Rio Grande Spanish needles, is a plant species native to Texas, Chihuahua and Coahuila. It is named for the Rio Grande which separates Texas from Mexico. The plant grows in sandy and silty soils at elevations of .Flora of North America v 21 p 390.
|
|
Salix cordata, the sand dune willow, furry willow or heartleaf willow, is a perennial shrub that grows tall; plants taller than are rare. The plant is native to the northeast regions of the North American continent; it is found on sand dunes, river banks, and lake shores in sandy, silty or gravelly soils.
|
|
There are four (4) types of soil in this municipality. These are: Kabacan Clay, Kudarangan Clay, San Manuel Silty Clay Loam and Hydrosol. Kabacan Clay Loam is about 12,397.500 hectares or 37.52% of the municipal land area. These are the soils at the central portion or at the heart of the municipality.
|
|
The Kadzi Formation is a geological formation in Zimbabwe whose strata date back to the Tithonian stage of the Late Jurassic. The conglomeratic sandstones and silty mudstones of the formation were deposited in an alluvial environment.Kadzi Formation at Fossilworks.org Dinosaur remains are among the fossils that have been recovered from the formation.
|
|
Most of the tunnel passes through the Upper Hythe C and D layers and the Lower Hythe A layer, which are described as "Weak, locally very weak to moderately strong, slightly clayey fine-to-medium sandstone with occasional thin beds of clayey/silty fine sand" and typically has Uniaxial Compressive Strength (UCS) values of 2–5 MPa. The rock is heavily fractured and has mean fracture centres varying from . The southern end of the tunnel however passes through the "less competent" Upper Hythe A and B layers which are described as "medium-dense thinly bedded and thinly laminated, clean-to-silty and clayey fine and medium sand with subordinate weak-to-strong sandstone, cherty sandstone and chert". Most of the tunnel is above the predicted water table.
|
|
The Omanaia River is a river of the Northland Region of New Zealand's North Island. It flows northwest from the Waima Forest, first as a stream and then as a silty arm of the Hokianga Harbour. The township of Rawene stands at the point where the river meets the main waters of the harbour.
|
|
The Taihiki River is a river of the Auckland Region of New Zealand's North Island. It flows generally northeast from its sources north of Patumahoe to reach the Waiuku River shortly before the latter's outflow into the Manukau Harbour. As with the Waiuku River, much of the Taihiki's length is as a wide silty estuary.
|
|
However the variety of soils from gravelly or silty to sandy loam and sandy clay are suitable in many parts for agriculture. A number of plants inhabit the commune including gum, baobab, jujube, Kungo sira and other thorny species and the trees are plants are often used for firewood, lumber, and for medical purposes.
|
|
A water quality, water flow and ecology monitoring station is located at on the Piako River at Kiwitahi. It is open with a one-metre fenced off buffer on either side of the stream and no riparian planting. Macrophytes choke the softy, silty riverbed during the summer, but are often removed during the winter floods.
|
|
The Bogotá Formation consists mainly of grayish-red, locally purplish, commonly greenish-gray, generally poorly stratified mudstone and silty claystone. Lithic arenite sandstone lenses, ranging from fine- to medium-grained, generally friable and variegated, are local constituents. Carbonaceous material is present as thin beds of low-grade argillaceous coal, north of Bogotá.Bayona et al.
|
|
Mountain soils are found in the valleys and hill slopes of the Himalayas at altitudes of 2700 m to 3000 m. These soils are least studied and often the vegetation cover helps in their classification.The carbon nitrogen ratio is very wide. They are silty loam to loam in texture and dark brown in colour.
|
|
The presence of aquatic and moisture-reliant taxa including Kayentachelys, Prosalirus, and Eocaecilia indicates that water was likely abundant. This abundance of water is also supported by the presence of mudstones within "silty facies" the Kayenta Formation on Ward Terrace. Petrified wood is common in the Kayenta Formation on Ward Terrace, suggesting abundant gymnosperm plantlife.
|
|
An unconformity occurs before late Miocene sequences including the Dupi Tila sandstone and claystone, with another unconformity between the Dupi Tila units and Pliocene Dihing claysone and silty sandstone. Pleistocene St. Martin's limestone and Madhapur clay are separated from Pliocene units by an unconformity as well from Holocene sand, silt, clay, peat and coral alluvium.
|
|
CONABIO, México D.F..Poole, J.M., et al. 2007. Rare Plants of Texas, Texas A&M; University Press, College Station TX All of the known US populations are staminate (male), lacking female flowers, reproducing vegetatively. The species grows on sandy and silty soils of river bottoms and floodplains. Allolepis texana is similar to Distichlis spp.
|
|
Twostripe gobies are relatively rare. They usually occur in pairs, but can be found alone in silty flat sand patches or rubble substrates. They are usually found on outer reefs at the bottom of coral or rocky dropoffs, rarely in lagoons. They feed on small digging (fossorial) organisms by sifting them from mouthfuls of sand.
|
|
Kaupus costatus occur among seagrass and algal beds, in mangroves, and in estuaries. to depths of . It prefers silty environments but these have to have relatively clear water. Its dietary habits are little known but it is food is thought to consist of small planktonic and possibly benthic crustaceans as in other Australian pipefishes.
|
|
In the Illinois River in Oklahoma, specimens found in silty backwaters have been observed to be large, darkly stained, and with algal growth on their shells. Contrastly, individuals found in fast flowing water over rock or gravel were smaller, lighter-coloured and more likely to show the green rays often present in this species’ shell.
|
|
Kudarangan Clay Loam is found in slightly rolling to hilly terrain or at the north-eastern barangays. This soil type occupies the 24.24 percent of the municipal area or 8,010.00 hectares. San Manuel Silty Clay Loam is located at barangays Upper Labas, Nalin and portions of barangay Villarica. This occupies an area of 1,980 hectares.
|
|
The target shrimpgoby (Cryptocentrus strigilliceps) is a species of goby native to the Indo-West-Pacific where it occurs near coasts on silty or sandy reefs at depths of from . This species is commensal with alpheid shrimps. It can reach a length of TL. This species can also be found in the aquarium trade.
|
|
Drained Stagnosols can be fertile soils owing to their moderate degree of leaching. Stagnosols cover 150–200 million ha worldwide. For the greater part in humid to perhumid temperate regions of West and Central Europe, North America, southeast Australia and Argentina. Here Stagnosols are associated with Luvisols as well as silty to clayey Cambisols and Umbrisols.
|
|
Nemophila phacelioides, commonly called large-flower baby-blue-eyes or Texas baby-blue-eyes, is a flowering plant in the waterleaf family (Hydrophyllaceae). It is native to the South Central United States, where it is found in Arkansas, Oklahoma, and Texas. Its natural habitat is in woodland openings in riparian bottoms, in sandy or silty soils.
|
|
These waterfowl feed heavily on the crops grown on the Stuttgart soils. Stuttgart soils have been mapped on about in Arkansas. The Stuttgart series consists of very deep, moderately well drained or somewhat poorly drained soils formed in silty and clayey alluvium. These level to gently sloping soils are on the Grand Prairie in the Lower Mississippi Valley.
|
|
The type section is in the Wernecke Mtns; it corps out also in and to the S/SW of the Rochardson Moutnars. It possibly corresponds to the Sekwi Fm in the Macxkenzie mtns. Lowermost of the Palaeozoic strata west of the Richardson Mountains, angular unconformity at base, overlying various Precambrian strata. Silty limestones and massive dolomites.
|
|
The Taiharuru River is a river of the Northland Region of New Zealand's North Island. It flows predominantly northeast from its sources east of Whangarei, emptying into the southern end of Ngunguru Bay. About half of the river's length is a silty drowned valley. The New Zealand Ministry for Culture and Heritage gives a translation of "resounding sea" for .
|
|
' The headland is an unspoiled part of the Delimara peninsula, facing St. Thomas' Bay. It has a number of terraced fields, and commands good views of the bay from its heights. The fields are typical Maltese agricultural land, consisting of small plots. The soil depth is less than two feet on average, containing mainly silty-sandy soil.
|
|
The Bedford Shale in Michigan is generally overlaid by the Berea Sandstone. The upper part of Bedford in this state is silty and sandy, making the boundary between it and the Berea sandstone nearly impossible to identify visually. The boundary may be determined by gamma ray logging, however. In eastern Michigan, the Bedford Shale overlays the Antrim Shale.
|
|
Native to New Caledonia, Papua New Guinea and coastal eastern Australia, from Botany Bay in New South Wales northwards into Queensland, M. quinquenervia grows in swamps, on floodplains and near rivers and estuaries, often on silty soil. It has become naturalised in the Everglades in Florida, where it is considered a serious weed by the USDA.
|
|
Flowers and fruits appear from May to September. The fruit of the catclaw brier is a long, slender, rounded pod that has a covering of dense prickles, typically about long. Habitat includes disturbed areas of sandy or silty soils, roadsides, grasslands, prairies and forest margins. It is known to be very nutritious for livestock, who will seek it out.
|
|
The Mist Mountain Formation consists of interbedded light to dark grey siltstone, silty shale, mudstone, and sandstone, with localized occurrences of chert- and quartzite-pebble conglomerate and conglomeratic sandstone, as well as a series of economically important coal seams.Glass, D.J. (editor) 1997. Lexicon of Canadian Stratigraphy, vol. 4, Western Canada including eastern British Columbia, Alberta, Saskatchewan and southern Manitoba.
|
|
Zanardinia typus is found in the northeastern Atlantic Ocean and the Mediterranean Sea, its range including southwestern Britain and Ireland, the Atlantic coast of France, Spain and Portugal, the western Mediterranean Sea, the Adriatic Sea and the Black Sea. It grows on rock and silty boulders in the shallow subtidal zone at depths down to about .
|
|
Yellow-faced pocket gophers usually inhabit deep sandy or silty soils that are relatively free from rocks. However, where Geomys (another genus of pocket gophers) is present, Cratogeomys is restricted to "denser, shallower, sometimes rocket soils." Birney, E. C., J.K. Jones, Jr., and D. M. Mortimer. 1971. The yellow-faced pocket gopher, Pappogeomys castanops, in Kansas. Trans.
|
|
Three soil associations exist in the Darby Creek watershed. The Neshaminy-Lehigh-Glenlg soil association is prevalent in the northwest part of the watershed. It consists of silty, well drained, gravelly, and deep soil that rests on gabbro and granodiorite bedrock. The Chester-Glenlg-Manor soil association is prevalent throughout the watershed except in its lower reaches.
|
|
In the Upper Hunter, the rivers and creeks of the region contribute to the areas black, silty loam soils that are often overlaid on top of alkaline clay loam. Among the hills of the Brokenback range are strips of volcanic basalt that are prized by growers for their tendencies to restrict vigor and concentrate mineral flavours in the grapes.
|
|
The fossil bones found in the cave included elephants, hippopotamuses, rhinoceroses, hyenas, bison, giant deer, smaller mammals and birds. This is the northernmost site in the world where hippopotamus remains have been found. It also included a considerable amount of fossilized hyena faeces. The fossilized remains were embedded in a silty layer sandwiched between layers of stalagmite.
|
|
Classifications are typically named for the primary constituent particle size or a combination of the most abundant particles sizes, e.g. "sandy clay" or "silty clay". A fourth term, loam, is used to describe equal properties of sand, silt, and clay in a soil sample, and lends to the naming of even more classifications, e.g. "clay loam" or "silt loam".
|
|
The Watson Series and the Middlebury Series (sandy and silty loams, respectively) are found in parts of the central part of the Briar Creek watershed. The Zipp Series is a somewhat acidic silt loam that occurs in places such as the Cabin Run watershed. Briar Creek is between and wide. Its tributary West Branch Briar Creek is about wide.
|
|
The Calapooya Mountains are composed of volcanic rocks and newer sedimentary strata. The mountains have been deeply eroded by the Coast Fork Willamette River and its tributaries. In the southern drainage, the tributaries of the North Umpqua River have cut into the southern slopes. The soil is silty, clay loam formed from sandstone, sediment, and igneous rocks.
|
|
The Creelsboro Natural Bridge consists of Upper Ordovician Period silty dolomite of the Cumberland Formation. Unlike most natural bridges it is made of dolomite rather than sandstone. First discovered in 1770 by a group of hunters, Rockhouse is a popular site for camping. It was designated a National Natural Landmark by the U.S. National Park Service in 1987.
|
|
The Drummer soil series is the state soil of Illinois. Drummer soil It was established in Ford County, Illinois, in 1929. Drummer Soil was named for Drummer Creek in Drummer Township. It consists of very deep, poorly drained soils that formed in 40 to of loess or other silty material and in the underlying stratified, loamy glacial drift.
|
|
Baikal seals have one unusual foraging habit. In early autumn, before the entire lake freezes over, they migrate to bays and coves and hunt Kessler's sculpin, a fish that lives in silty areas and, as a result, usually contains grit and silt in its digestive system. This grit scours the seals' gastrointestinal tracts and expels parasites.
|
|
Steptoe Butte is a quartzite island jutting out of the silty loess of the Palouse hills in Whitman County, Washington, in the northwest United States. The butte is preserved as Steptoe Butte State Park, a publicly owned recreation area located north of Colfax. Steptoe Butte and Kamiak Butte comprise Steptoe and Kamiak Buttes National Natural Landmark.
|
|
The Narrow Vein Mudstone Formation (commonly known as the Narrow Vein) is an Ordovician lithostratigraphic group (a sequence of rock strata) in Mid Wales. The rock of the formation is silty, homogenous or finely-laminated mudstone. It generally a medium blue colour. This formation has been commercially quarried as slate in several locations along its length.
|
|
P. rhombolepis was discovered in the Gauja Regional formation within the lower Frasnian section. Taphocoenosis was characterized as in finely displaced clay and silty clay as well as low water activity. Within this environment it has been hypothesized that P. rhombolepis was a large predator and fed upon dipterids, small and juvenile sarcopterygians, and Latvius.Upeniece, Ieva.
|
|
The paleo-channel deposits comprise brown-coloured, fine to medium sands with well preserved cross-beddings. The fluvio-marine deposits are exposed in the Vaigai delta as deltaic plain, paleo-tidal and dune flat deposits. The deltaic plain and dune flats comprise medium, grey brown sands. The paleo tidal flat deposits include black silty clay, black clay and mud.
|
|
The Pierre Shale of Upper Cretaceous Age is the underlying structure of the region. At Enders Dam this formation is found at a depth of below the valley floor. The Ogallala Formation of Pliocene Age overlies the Pierre Shale. The Ogallala Formation is composed of fine to course sand, some gravel, calcareous silt, silty sands, silts and clays.
|
|
Lignite is abundant in sediments between the basalt layers. Lignite from the Westfjords and Tjörnes contains mainly the remnants of conifers such as pine, giant sequoia, Glyptostrobus and larch but also deciduous trees. A variety of plant remnants have been found in adjacent sediments. These remnants are mainly preserved in silty or sandy fresh water sediments, e.g.
|
|
An additional dark spot on the gill plate is not black, but translucent, exposing the pink of the gills. Fins are pale orange, slightly darker in the male. Sexes are difficult to recognize, except that the female has a fuller body. It natively inhabits clear or muddy streams, and rivers, as well as standing waters, with a silty bottom.
|
|
Bedding planes and joints weaken the rock, which is weak anyway. Narrow zones of crushed rock allow water in. The southern approaches to the new tunnel are largely unstable landslide debris, formed of silty clay with rock fragments. Towards the end of the construction of the new tunnel, it was feared the old one might collapse.
|
|
In the Odernheim Subformation, too – the uppermost section of the Meisenheim Formation – silty minerals predominate. Those deposits are found mainly south of Abtweiler, near the village's outskirts. The subformation begins with a moderately to coarsely sandy, and in many places detritus-bearing, horizon, Bed R-5. It is capped off by the dark mudstones in the Humberg Bed.
|
|
The Baldy Hill Formation is a dark purple, reddish brown, or greenish gray silty to sandy mudstone with some fine-grained sandstone. Its base is not exposed at the type section, but it is at least . It is overlain by the Travesser Formation, with the contact marked by the Cobert Canyon Sandstone Bed, a persistent layer of conglomerate beds.
|
|
Rumex lapponicus occurs between 0–2500 meters in elevation in montane and submontane meadow and outcrop environments throughout Canada (British Columbia, Alberta, Yukon, and the Northwest Territories), the United States (Montana, Wyoming, and Alaska), Greenland, and throughout North Eurasia. It is most successful in silty, fine soils along rivers and streams in montane and tundra zones.
|
|
An outcrop of loess in Patagonia Much of Argentina is covered by loess. Two areas of loess are usually distinguished in Argentina: the neotropical loess north of latitude 30° S and the pampean loess. The neotropical loess is made of silt or silty clay. Relative to the pampean loess the neotropical loess is poor in quartz and calcium carbonate.
|
|
The texture of the soils ranged from silt loam to silty clay loam. Mica and kaolinite were the two other minerals whose abundance was nearly equal. Occurrence of small quantities of mica-vermiculite intergrades and some interstratified clay minerals was suspected. A small portion of smectites was considered to be formed authigenically in the soils from Bhola.
|
|
The formation is composed of siltstone and dark grey shale, with dolomitic siltstone in the base and fine grained sandstone towards the top. The facies is shaley in the north and west of the extent (Fort St. John), silty in the center (Dawson Creek and Pouce Coupe areas) and becomes coarser (sandy) in western Alberta (Valleyview area).
|
|
The formation consists of yellowish-gray to grayish-orange cliff-forming sandstone. The upper beds are massive and crossbedded, consisting of well-sorted, fine-grained, friable sandstone. The lower beds are alternating thin beds of sandstone and light- to dark-gray silty shale. The upper part of the shale beds contains up to of discontinuous ironstone beds.
|
|
Further east, the homogeneous Cardiff divides into the Bridgewater, Solsville, and Pecksport shale members, from base to top. The Bridgewater is a fissile dark silty shale with relatively rare fossils. A thin concretionary zone lies above, then the Solsville grades from a gray calcareous shale, to sandy siltstones and fine sandstones at the top, with the gray shale of the Pecksport shale and siltsone overlying it. In south central Pennsylvania, the Marcellus is mapped with three members, from top to base: The Mahanoy Member (Dmm), a dark gray to grayish black silty shale and siltstone; the Turkey Ridge Member (Dmt), an olive to dark-gray fine to medium grained sandstone; and the Shamokin Member (Dms), a dark gray to grayish black fissile carbonaceous shale that is calcareous in places near the base.
|
|
Antarctic Journal of the U.S. 29(5)35-36. At Turbidite Hill, the Buckley Formation consists of cross-bedded medium- and coarse-grained sandstone, thin silty carbonaceous sandstone, muddy siltstone, and thin coal seams. The sandstone exhibits cross-bedding, convoluted bedding, and cross-laminations. Beds of sandstone with laminated bases that grade upward into ripple-drift laminated and convoluted siltstone are common.
|
|
Building duck wing terraces with amphibious excavators An amphibious excavator (or pontoon excavator or floating excavator) is a type of excavator that can perform dredging while afloat on soft terrain such as swamp, wet land, and shallow water. An amphibious excavator is better adapted for removing silty clay, clearing silted trenches, swampland operation, and shallow water operation than traditional barge-mounted dredgers.
|
|
The Antlers Formation is a stratum which ranges from Arkansas through southern Oklahoma into northeastern Texas. The stratum is thick consisting of silty to sandy mudstone and fine to coarse grained sandstone that is poorly to moderately sorted. The stratum is cemented with clay and calcium carbonate. In places the sandstone may be conglomeratic or ferruginous (rich in iron oxides).
|
|
The Pahi River is a river of the Northland Region of New Zealand's North Island. It flows generally west from its origins southwest of Maungaturoto, and the last few kilometres of its length form an upper silty arm of the Kaipara Harbour. It forms one of the arms of the Arapaoa River, in the northeastern part of the harbour's system.
|
|
The Kaleet River effectively starts north of Lower Macdougall Lake in the Kitikmeot Region, Nunavut, Canada just east of Joe Lake, . It is a small, silty river constituting the eastern boundary of the Queen Maud Gulf Bird Sanctuary. It is a main feeder river to Sherman Basin, , at its final outlet. There is evidence of earlier Inuit presence in the form of inuksuit.
|
|
Red is associated with hematite rich ochre and yellow with goethite. Much of the excavated ochre had silty or clayey grain sizes. The post-Howiesons Poort layers proved to be the most abundant in ochre pieces, but the Howiesons Poort layers had the highest ochre frequency per sediment volume. The utilization rate of ochre was highest in the pre-Howiesons Poort layers.
|
|
Mullus auratus is a demersal species which is found over coastal mud or silty sand bottoms where it uses its barbels to find benthic invertebrates. This species is commoner in offshore oceanic, continental shelf waters than it is in coastal habitats. It is normally found between over a sand-mud substrate. The larvae and juveniles are associated with Sargassum weed.
|
|
M. robustum is found in the eastern United States from the Cape Fear River drainage in North Carolina's Peedee River drainage, south to the Oconee River system, part of Georgia's Altamaha River drainage. They live in both rocky and silty pools or less turbulent areas of small and medium rivers, and are also found in reservoirs and other water impoundments.
|
|
The Pekin series is found along Fishing Creek and its tributary Huntington Creek. The uppermost layer, a dark brown silt loam that extends to underground, lies over a layer of brown silt loam with 10 percent gravel extending underground. The subsoil is mottled, brown, silty clay loam with cobbles and extends to underground. Bedrock occurs at a depth of underground.
|
|
The Bedford Shale's upper and lower contacts are usually sharp in the state, but complicated by intense deformation. In much of eastern Kentucky, the Bedford Shale and Berea Sandstone intertongue (interlock). Near Vanceburg, the upper of the Bedford Shale is silty shale that comes between the Bedford and Berea siltstone. Only to the east near Garrison, Bedford is almost completely siltstone.
|
|
It is a complex formation containing coal seams and is made up of clay and shales. The landscape is typically undulating and includes outcrops of sandstone. Most of the area around Stanton Drew have neutral to acid red loamy soils with slowly permeable subsoils. Soils to the eastern part of the area are slowly permeable clayey and fine silty soils.
|
|
The village is known within the state for its dolomitic limestone quarry, which produces rock. harbor rock, gravel, and a very hard and weather resistant type of marble. The dolomitic limestone is Silurian aged Niagaran Dolomite. Glacial sediments overlying the bedrock in the area consist of a pebbly and cobbly, sandy, silty glacial till known as the Valders Member of the Kewaunee Formation.
|
|
Ten Speed Press, Berkeley, California. p. 146. It is found growing in the grey silty clay soils in the Palmerston and Berry Springs regions and on Melville Island. While most carnivorous plants are calcifuges that cannot tolerate alkaline soils, D. falconeri grows on calcareous sandy soils with high pH values.Adlassnig, W., M. Peroutka, H. Lambers, and I. K. Lichtscheidl. 2005.
|
|
The river bedrock is predominantly shale, covered by silty loam soils left behind by past glaciation. The stream bed itself varies from solid rock to particulates such as gravel, sand and clay. Geologically, the Shawangunk valley is part of the Ridge-and-Valley Appalachians, typified by the Shawangunk Ridge to the west and the lower Hoagerburgh Ridge to the east.
|
|
Trypauchen vagina, commonly known as the burrowing goby, is a species of eel goby found in the Indo-Pacific region. It has an elongated body about in length. It is reddish-pink in color and possesses distinctive pouches in the upper edges of its gill covers. It lives in burrows in the silty and muddy bottoms of its marine and brackish habitats.
|
|
The palaeogeography evolved from a south-facing platform, marginal to a northeastern relief, to a wide-open marine passage limited by a southern platform and, finally, to a tidal-dominated strait. The closing of the Betic corridor is recorded by the presence of lagoonal, silty sediments covered by a stromatolite layer and crowned by a red soil in the westernmost outcrops.
|
|
Faxonius limosus is a species of crayfish in the family Cambaridae. It is native to the east coast of North America, from Maine to the lower James River, Virginia, but has also been introduced to Europe. It is known commonly as the spinycheek crayfish. It is unusual in that it lives in silty streams, rather than the clear water usually preferred by crayfish.
|
|
Thatta's geology is characterized by volcanic and sedimentary rocks that are similar to those in the Indus plain, and Thar Desert. Soil types in the region are silty, with some clay as well. Much of the soil is exposed to salinization from the Arabian Sea. Vegetation in Thatta is characterized by mangrove forests in the coastal region, with tropical-thorny shrubs elsewhere.
|
|
Micromyrtus acuta is a plant species of the family Myrtaceae endemic to Western Australia. The erect shrub typically grows to a height of and produces white flowers. It is found among rocky outcrops in where the Wheatbelt meets the Goldfields-Esperance region of Western Australia between Yalgoo and Perenjori where it grows in silty to sandy soils around granite and laterite.
|
|
Chesterfield is a city in St. Louis County, Missouri, United States, and a western suburb of St. Louis. As of the 2010 census, the population was 47,484, making it the state's fourteenth-largest city. The broader valley of Chesterfield was originally referred to as "Gumbo Flats", derived from its soil, which though very rich and silty, became like a gumbo when wet.
|
|
More recent construction uses the vacuum preloading method, which results in better compacted surfaces. # A layer of marine deposits of silt and silty clay interspersed with sand, of recent date (~800 years BP). It is around 15 m thick, highly waterlogged, and considered a risk to liquefy during an earthquake. # A layer of alluvial deposit of the Holocene estuary delta.
|
|
The Aquia Formation is a geologic sandstone formation that extends from the upper Chesapeake Bay to the James River near Hopewell, Virginia. It consists of clayey, silty, very shelly, glauconitic sand. Fossil records indicate that this stratigraphic unit was created during the Paleocene. The Aquia formation was named for Aquia Creek where it is exposed in cliff faces along the banks.
|
|
The upper part of the Cleveland Shale is a black to brownish black silty shale with occasional thin beds of gray shale and siltstone. The upper part is much richer in petroleum and kerogen. When broken open, fresh samples smell like crude oil. Where the upper part is thick, and particularly in northeast Ohio, the shale has a distinctive "rippled" appearance.
|
|
The cherry barb's natural habitat is a heavily shaded, shallow, and calm water body. Its native substrate is silty with leaf cover. It comes from a tropical climate and prefers water with a pH of 6 to 8, a water hardness (dH) of 5 to 19, and a temperature range of 73 °F to 81 °F (23 °C to 27 °C).
|
|
There were trails on both sides of the muddy rivers. The Platte was about wide and deep. The water was silty and bad tasting but it could be used if no other water was available. Letting it sit in a bucket for an hour or so or stirring in a 1/4 cup of cornmeal allowed most of the silt to settle out.
|
|
The Arcadia Formation is composed of limestones and dolomites which are yellowish gray to light olive gray to light brown in color. The texture is micro to finely crystalline with varying sandy, clayey limestones and dolomites containing phosphate. The clays are yellowish gray to light olive gray in color. They are moderately hard as well as sandy, silty, phosphatic and dolomitic.
|
|
Its typical habitat has been reported as sandy or pale silty clay soils on creekbanks or in swampy areas. Dominant vegetation in association with its habitat include Melaleuca quinquenervia and Lophostemon suaveolens. S. debile is most closely related to S. paniculatum but differs by the inflorescence form and the presence of bracts. Its conservation status has been assessed as secure.
|
|
University of Tennessee Press. Knoxville, Tennessee. N. flavipinnis is able to survive in a wide range of environments, from small, pristine, silt-free waters in Citico Creek to the larger, warm, and very silty Powell River. While no specific predator is known, the yellowfin madtom exhibits cryptic coloration and also hides itself in the daytime, both of which are predator-avoidance strategies.
|
|
A Junttan purpose-built piledriving rig in Jyväskylä, Finland A tracked piling machine on its specialized transport truck in London. A piling rig is a construction machine for piling in foundation engineering. It is mainly applied to drill in sandy soil, clay, silty clay, etc. and widely used cast-in-place piles, diaphragm walls, foundation reinforcement and other foundation projects.
|
|
Yaverlandia is a genus of maniraptoran dinosaur. Known from a partial fossil skull (MIWG 1530) found in Lower Cretaceous strata of the Wessex Formation (Upper Silty Bed; Vectis Formation) on the Isle of Wight,Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Europe)". In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press.
|
|
There were trails on both sides of the muddy rivers. The Platte was about wide and deep. The water was silty and bad tasting but it could be used if no other water was available. Letting it sit in a bucket for an hour or so or stirring in a 1/4 cup of cornmeal allowed most of the silt to settle out.
|
|
The fine- grained form with clayey-silty cement between the quartz grains causes banks and slopes with terracing. The beds of sandstone with siliceous cement are typically the basis of the formation of rock faces and crags. Small variations in the cement composition of the rock can have a visible impact on the landscape.W. Pälchen (Hrsg.)/ H. Walter (publ.): Geologie von Sachsen.
|
|
In 1827 Walker married Jane Thomlinson of Whenby. The foundry site () on the banks of the River Foss, which facilitated water-borne transport, was originally silty land that had been reclaimed by a medieval dam and was a notoriously unsanitary slum. Five of the Walkers' 7 children died, perhaps partly because of the unhealthy conditions, only 1 surviving beyond his 23rd year.
|
|
The Gentbrugge Formation reaches its greatest thickness in the north of Belgium, where it can be maximally thick. It is subdivided into three members. The base of the formation is formed by silty clay and clayey silt (Merelbeke Member). On top of this are laminae of silt (Pittem Member) and beds of very fine sand, disturbed by bioturbation (Vlierzele Member).
|
|
Threadfins frequent open, shallow water in areas with muddy, sandy, or silty bottoms; they are rarely seen at reefs. Their pectoral rays are thought to serve as tactile structures, helping to find prey within the sediments. Noted for being euryhaline, threadfins are able to tolerate a wide range of salinity levels. This attribute allows threadfins to enter estuaries and even rivers.
|
|
The known range of Boutan's whiting is known only to include Gulf of Tonkin, and the coast of south east China, although the common confusion with S. sihama may mean it is more widespread but not reported. The species is known to live on inshore silty bottoms, in depths down to 20 m. Nothing else is known of its biology.
|
|
The plants occur in sparsely vegetated openings in pinyon- juniper woodland habitat. They are generally restricted to pockets of shale lens soils surrounded by less hospitable soil types. The shale soil is derived from the Mancos Formation and is silty and alkaline. Other plants in the habitat include blue grama (Bouteloua gracilis), black sagebrush (Artemisia nova), shadscale (Atriplex confertifolia), and snakeweed (Gutierrezia sarothrae).
|
|
Though Oligokyphus is very widespread, it was not until 1953 that representatives of this group were found. Information was first collected from the Kayenta Formation on Comb Ridge in northeastern Arizona. Numerous specimens of Oligokyphus were obtained by Harvard University and the Museum of Northern Arizona in the "Silty Facies". Many fossils have also been found throughout the UK, Germany and China.
|
|
The Barnett Shale is the second formation to have developed during the Mississippian Period. It consists mainly of silty brown shale and fine-grained sandstone and siltstone. This Formation was much thicker than the Mississippian Limestone, ranging from . The increased thickness can be explained by increased sedimentation in the area, which was likely caused by tectonic activity in the region.
|
|
There are up to ten bands in a fifteen-metre section. The fine grained silty sediments were laid down in a low energy, south-east flowing deltaic setting, near the shores of a shallow sea. There is no natural selection in which the Ashfield Shale is completely exposed. However, it can be seen at railway and roadside cuttings, as well as old quarries.
|
|
The Papo Seco Formation (Rey, 1992) marks the return to clastic-dominated sedimentation. Exposure of the formation is found above the low cliff between Rochadouro and Areia do Mastro, and on the foreshore and beach at Boca do Chapim. The Papo Seco Formation is dominated by silty mud-mud deposition. This is interbedded with medium to coarse, commonly ribbon shaped, clastic sandstones.
|
|
With elevations ranging from 2000 feet in the lower drainages to 3600 feet on the ridge crest, London Bridge Branch wild area is dominated by a mountain ridge with small, steep sideslopes. A diversity of geologic features is characteristic of the Southern Appalachian Mountains. Geologic rock types are the Erwin Formation with white, vitreous quartzite, interbeds of dark-green, silty and sandy shale, minor siltstones and very fine sandstone; the Hampton Formation with dark greenish-gray, silty and sandy shale, micaceous shale, numerous layers of medium-grained, feldspathic, and thinly bedded sandstone; the Union Formation, a sequence of grey feldspathic sandstone, arkose, conglomerate, greywacke, siltstone and shale, and greenish amygdaloidal basalt flow; and Shady Dolomite, a light gray, well-bedded dolomite with thin to medium-bedded gray limestone, and yellowish brown residual clays with “jasperoid” diagnostic.
|
|
Farther to the north, glacial deposits and wind-deposited loess, a silty soil also associated with the glaciers, are intermingled with the residual soils. While the soil could support other crops, the steep slopes of these areas were better used for viticulture. German settlers established the first wineries in the mid-19th century. Italian immigrants later established their own vineyards, especially near Rolla in Phelps County.
|
|
Zostera japonica is a species of aquatic plant in the Zosteraceae family. It is referred to by the common names dwarf eelgrass or Japanese eelgrass, and is native to the seacoast of eastern Asia from Russia to Vietnam, and introduced to the western coast of North America. It is found in the intertidal zone and the shallow subtidal, and grows on sandy, muddy and silty substrates.
|
|
A climber scales the Ardingly Sandstone at Bowles Rocks near Crowborough The Lower Tunbridge Wells Sand shows the best cyclic fining up sequences in the formation. The division comprises mainly interbedded siltstones and silty sandstones and occurs up to 27m thick.Lake, R.D. & Shepard-Thorn, E.R. (1987) Geology of the country around Hastings and Dungeness: Memoir for 1:50,000 geological sheets 320 and 321. British Geological Survey, London.
|
|
U. paniculata colonizing a sand dune at John U. Lloyd Beach State Park, Florida. Due to the harsh conditions in which it grows, U. paniculata has little competition from other plants. It is heat tolerant and highly resistant to drought, salinity and brief inundation by sea water. It grows in loose sand rather than finer- grained silty or clay-rich soils and does not tolerate water-logging.
|
|
This species is widespread throughout the tropical waters of the Indo-West Pacific region, including the Red Sea, occurring at depths down to . Its typical habitat is in silty environments without strong wave action such as protected fringing reefs and back reef slopes. In the atoll lagoons of the Indian Ocean it is often plentiful and dominant, while in the Red Sea it is uncommon.
|
|
Ensis ensis burrows into clean or silty sand on the seabed in the neritic zone and the low intertidal zone. When covered with water this bivalve remains close to the surface but when disturbed or when the substrate is exposed it descends to half a metre below the surface. It can tunnel with great rapidity.Fish, J.D. and Fish, S. (1996) A student’s guide to the seashore.
|
|
The arboretum belongs geologically to the Upper Harz. The southern and western parts are in the Clausthal Culm fault zone (Kulmfaltzone) consisting of greywacke and slate from the Carboniferous period. The northeastern part is in the territory of the Corallian limestone block of the Iberg complex. The soils that have developed from the geological source materials, are mainly base-poor, silty and loamy silicate-weathered soils.
|
|
Silty sediments and water rich in nutrients favor the growth of American water weed in nutrient-rich lakes. However, the plants will grow in a wide range of conditions, from very shallow to deep water, and in many sediment types. It can even continue to grow uprooted, as floating fragments. It is found throughout temperate North America, where it is one of the most common aquatic plants.
|
|
As its name suggests, the Thai whiting occurs predominantly in Thailand where it ranges the Gulf of Thailand, extending westward to the west coast of the Indian subcontinent, apparently having a fairly scattered distribution. The Thai whiting is a shallow water, inshore species which inhabits open silty substrates at depths of 0 to 10 m, occasionally entering estuaries. Nothing else known of its biology.
|
|
Canthigaster compressa, also known as the compressed toby or fingerprint toby, is a demersal Marine fish belonging to the family Tetraodontidae. The fingerprint toby is a small sized fish which grows up to 12 cm. It is widely distributed throughout the tropical waters of the western Pacific Ocean. It inhabits the shallow sandy to silty lagoons, harbours or channels from 2 to 12 m.
|
|
The Bass Formation consists of interbedded sandstone (arkose), and silty sandstone, prominent interbeds of conglomerate and dolomite, and subordinate interbeds of argillite and limestone. Dolomite and sandy dolomite are the predominate lithologies. Beds of intraformational breccia are also found throughout the Bass Formation. The dolomites and limestones vary in color from gray to red-gray and sometimes contain biscuit-form and biohermal stromatolite beds.
|
|
Soil that are silty or loamy, as described above, can hold larger moisture contents. Thus, segregated ice lenses are formed preferentially in these locations. The soil thus experiences greater frost heave than surrounding regions, becoming more highly elevated than its surroundings. Although the ice lenses melt during summer, the ground does not fully subside into its original elevation and remains at a slightly higher elevation than before.
|
|
It is found at depths from 2 to 60 ft on sandy, silty, muddy, or rubble bottoms, and also in fields of Zosteraceae. It is a nocturnal benthic species, an ambush predator, feeding by hunting from a hide by mimicking a crumpled, dead leaf or a drifting piece of seaweed. It feeds on shrimps and other tiny crustaceans which it sucks into its mouth.Ewald Lieske & Robert Myers.
|
|
The Chagrin Shale is a gray or greenish-gray argillaceous shale consisting of gray siltstone, silty gray shale, soft gray clay shale, and (uncommonly) grayish- black shale. The primary minerals in the shale are chlorite, illite, kaolinite, and quartz. Thin to massive beds of siltstone and sandstone are common. The amount of siltstone increases from west to east, at times forming beds up to thick.
|
|
The upper member of the Dox Formation is the Ochoa Point Member. Within the central Grand Canyon, it also has been removed by pre-Tapeats Sandstone erosion. It consists of micaceous mudstone that grades upward into a predominantly red quartzose, silty sandstone. Sedimentary structures found in this member include, salt crystal casts in the mudstone, and asymmetrical ripple marks and small-scale cross beds, in the sandstones.
|
|
The formation consists mostly of tuffaceous conglomerate and sandstoneBauer et al. 2005 with a thickness of more than . The formation is divided into three informal members These are a lower conglomerate member, a middle tuffaceous member, and an upper volcaniclastic member. The lower member is a sandy or silty conglomerate containing mostly Hondo Group quartzite clasts ranging in size from to over in diameter.
|
|
The formation consists of the Esmeraldas Member, which is a unit comprising highly foraminiferal tuffaceous calcareous shale. They were deposited by shallow water gravity flows, which brought the Esmeraldas fauna into the deep water () from shallow water, on the order of .Esmeraldas Beds at Fossilworks.org The Esmeraldas Member is covered by the Súa Member comprising burrowed, bioturbated, silty sandstones deposited in a coastal environment.
|
|
Plowing the soil during times of the year when this annual plant has not yet matured and set seed can prevent the species' propagation. The floodplain soil is silty and overlies limestone substrates. The habitat includes natural floodplains and farm land such as crop fields and pastures. Other rare plants in the Nashville Basin include Boechera perstellata, Dalea foliosa, Dalea gattingeri, and Echinacea tennesseensis.
|
|
Water released from the dam is generally cold and clear, as compared to the river's natural warm and silty flow, further changing the local riverine ecology. However, the cold water from Flaming Gorge has transformed about of the Green into a "Blue Ribbon Trout Fishery". The Flaming Gorge Reservoir, largely situated in Flaming Gorge National Recreation Area, is also considered one of Utah and Wyoming's greatest fisheries.
|
|
Convallaria majalis is a plant of partial shade, and mesophile type that prefers warm summers. It likes soils that are silty or sandy and acid to moderately alkaline, with preferably a plentiful amount of humus. The Royal Horticultural Society states that slightly alkaline soils are the most favored.RHS Encyclopaedia of Perennials It is a Euroasiatic and suboceanic species that lives in mountains up to elevation.
|
|
It was founded in 1764—1766 as the German colony of Baltser (; ); the last namePospelov, p. 31 of one of the colonists. The other name of the colony was Goly Karamysh (), after the river on which it was located. The "Karamysh" part in the river's name means muddy, silty, smudgy, while the "Goly" part alludes to the steppes and the lack of forests in the area; cf.
|
|
The Ceiswyn Formation (also known as the Ceiswyn Beds) is an Ordovician lithostratigraphic group (a sequence of rock strata) in Mid Wales. The rock of the formation is made up of interleaved beds of silty mudstones and siltstones with some sandstones and tuffs also present in small amounts. The formation runs diagonally across Mid Wales from close by Bala Lake to Cardigan Bay near Tywyn.
|
|
Colorado River Basin#CITEREFBenkeCushing2005 Engineering projects and river regulation have led to the extinction of four species and severe declines in the populations of 40 species. The bonytail chub, razorback sucker, Colorado pikeminnow, and humpback chub are among those considered the most at risk. All are unique to the Colorado River system and well adapted to the river's natural silty conditions and flow variations.
|
|
Caenidae, or the Small Squaregill Mayflies, is a family of insects consisting of 5 genera comprising 26 individual species. They are found throughout the world in lotic, depostional environments, and they are sprawlers. Caenids occur in quiet and even stagnant water and are often overlooked because they are so small. They like to live in silty bottoms, and their gills are specially adapted for such environments.
|
|
A silted lake located in Eichhorst, Germany Silt is easily transported in water or other liquid and is fine enough to be carried long distances by air in the form of dust. Thick deposits of silty material resulting from deposition by aeolian processes are often called loess. Silt and clay contribute to turbidity in water. Silt is transported by streams or by water currents in the ocean.
|
|
The formation is divided into the Macho Member, which is a massive ledge-forming limestone breccia (thickness );Baltz and Myers 1999 the Turquillo Member, a thick-bedded mudstone; the Manuelitas Member, which is a light to medium gray calcarenite, limestone-pebble conglomerate, and finely crystallized locally cherty limestone (thickness ); and the Cowles Member, which is a light yellow gray to olive yellow cross-bedded silty calcarenite (thickness .
|
|
The specimen was found in a channel sandstone about halfway up the formation, in the "silty facies". Specimens of the turtle Kayentachelys, the dinosaur Scutellosaurus, and tritylodonts were found in the immediate vicinity a few meters below it. Kayentasuchus was named in 2002 by Clark and Hans-Dieter Sues. The type species is K. walkeri in memory of Alick Walker, a well-known paleontologist.
|
|
Liquefaction is more likely to occur in loose to moderately saturated granular soils with poor drainage, such as silty sands or sands and gravels containing impermeable sediments. During wave loading, usually cyclic undrained loading, e.g. seismic loading, loose sands tend to decrease in volume, which produces an increase in their pore water pressures and consequently a decrease in shear strength, i.e. reduction in effective stress.
|
|
Holdrege silt loam covers 1.8 million acres of land in south- central Nebraska, under a grass landscape. Good drainage and moisture movement resulted in the downward movement of clay and lime. First described in 1917 in Phelps County, Nebraska, the soil has a significant role in corn, grain and soy farming. Formed in silty, calcareous loess, the soil ranges from 0 to 15 percent slope.
|
|
Contumyces is a genus of brightly colored possibly bryophilous or graminicolous agarics in the Hymenochaetales. They have an omphalinoid morphology, and therefore were previously classified in Omphalina. They inhabit mossy or grassy silty or sandy soils in the Northern Hemisphere. Phylogenetically related agarics are in the genera Rickenella, Gyroflexus, Loreleia, Cantharellopsis and Blasiphalia, as well as the stipitate-stereoid genera Muscinupta and Cotylidia and clavarioid genus, Alloclavaria.
|
|
630 over clast- supported pebbles with trough slope stratification along with horizontally laminated silty sediments. After initial deposition of the fan, the deposits are commonly overlain by clay/marl sediments. In rare cases, this can be a potential trap for hydrocarbons and a possible exploration target in the sands underneath. A fining upwards sequence exists in aggrading alluvial fans with distal fining laterally from the mouth.
|
|
The relative humidity is high, averaging about 70 percent during monsoon. The average annual rainfall in the district is 775.6 mm. About 78 percent of the annual rainfall is received during the period from June to September. The soils of the District vary in texture generally from loam to silty clay loam except along the Sutlej River and where some sandy patches may be found.
|
|
If possible it should be grown in water at least 70 cm deep on a sandy, peaty or silty substrate. Good water quality is needed to reduce the risk of turbid water or growth of blanket weed. Seed can be encouraged to germinate by immersing dried seed in water for at least a month, exposing them to a cold period, or by scarifying them.
|
|
Sand Mountain has, on average, a depth of soil - after which is solid sandstone bedrock. The soil is generally loam-based, and is a mixture of sandy loam and silty loam, drawing from such series as Apison, Atkins, Cotaco- Barbourville, Crossville, Hartsells, Lickdale, and Muskingum. It is extremely acidic, growing more so the deeper you go from the top. It is classified as "well-drained".
|
|
The level of slope in the watershed of Hoffer Creek, combined with the lack of conservation farming practices in the upper reaches of the watershed, causes fast-moving silty runoff to form during precipitation events, degrading the creek and all its tributaries. The dominant hydrologic soil groups in the watershed include C (80 percent) and B (20 percent). Streambank erosion occurs in the creek's watershed.
|
|
The Jotnian Tersky Formation crops out along the Tersky Coast at the southern shores of the Kola Peninsula. These outcrops are an overfill of the neighbouring Kandalaksha Graben, which is also filled with these sediments. The formation has silty beds within a matrix of mica and clay. The Tersky Formation was deposited in the timespan between 1263 and 1080 million years ago (±40 million years of error).
|
|
Tomiyamichthys russus, also known as the Ocellated shrimpgoby, is a species of goby native to the South China Sea where it can be found on silty bottoms at depths of from , often near the mouths of streams.Hoese, D.F., Shibukawa, K. & Johnson, J.W. (2016): Description of a new species of Tomiyamichthys from Australia with a discussion of the generic name. Zootaxa, 4079 (5): 582-594.
|
|
In Jefferson County to the east, the scarp coincides with the Wicomico Terrace with an elevation at 40–45 feet above mean sea level. The scarp separates the Hawthorn Group of fine to medium grained sandy clays and silty, clayey sands of the Red Hills Region of north Florida and southwest Georgia to the north from the fine to medium fine grained, partially recrystallized, silty to sandy limestones of the Gulf Coastal Lowlands to the south. A dramatic difference in elevation is seen here as the Red Hills, at a maximum of 70 meters (230 feet) mean sea level (MSL), drops to the area known as the Woodville Karst Plain, an elevation of 50 to 80 feet (15 to 24 meters) within 15 miles (24 km).Welcome to Jefferson County On the Woodville Karst Plain, the Suwannee Limestone of the Floridan Aquifer is shallow and exposed in many places.
|
|
The greater relief and deep loess hills of the Nebraska/Kansas Loess Hills are markedly different from the flat alluvial valley of neighboring 47d. Dissected hills with deep, silty, well drained soils supported a potential natural vegetation of tallgrass prairie with scattered oak-hickory forests along stream valleys. Cropland agriculture is now common and ample precipitation in the growing season supports dryland agriculture, with only a few areas requiring irrigation.
|
|
The Beaverdam Formation is an upper Pliocene geologic formation on the Delmarva Peninsula in southern Delaware and eastern Maryland. It is the largest major surficial layer on the Delmarva Peninsula and has a lower stream-deposited unit and an upper estuarine unit. These units may represent a cycle of regression and transgression. The Beaverdam Formation is heterogeneous and ranges from very coarse sand with pebbles to silty clay.
|
|
The genus is known only from the single holotype, a partial bracket fungus fruiting body, or conk. The specimen, AW 104 D top, is currently residing in the collections housed by the Royal British Columbia Museum, Victoria. The specimen was collected south of the Campbell River on the eastern shore of Vancouver Island. The partial conk was preserved in a calcareous nodule recovered from a silty mudstone matrix.
|
|
The Fernando Formation is split into two sub-facies known as the Pico and Repetto Members. These members represent a distinct change in the depositional environment and are of Pleistocene age. The Repetto is the older of the two members and is composed of interbedded fine to coarse grained siltstone, mudstone, and sandstone. The Pico Member is mostly made of massive siltstones and sandstones interbedded with minor silty-sandstones.
|
|
The name "vaseux" is French, meaning muddy or murky, which is descriptive of the lake's silty water. The lake was likely named by French Canadian fur traders. Vaseux Lake, 1909The lake was misspelled as Vasuix Lake on Joseph Trutch's maps from 1866 and 1871. For many years the name was later spelled Vaseaux Lake; in 1945 the Geographic Board of BC corrected the official name to its present form.
|
|
As sea levels began to rise again during the early Cretaceous, the exposed Jurassic shelf was flooded. Increased temperatures during the Cretaceous, along with increased erosion inland, resulted in the transport of large amounts of clastic materials. Fine-grained clastics formed the basis of deltaic complexes along the coastal margin. Increased accommodation space during highstands allowed for the deposition of silty material over the carbonates of the former Jurassic shelf.
|
|
Large tench may be found in gravel pits or deep, slow-moving waters with a clayey or silty bottom and copious aquatic vegetation. The best methods and bait to catch tench are float fishing and ledgering with a swim feeder using maggots, sweetcorn, pellets, bread, and worms. Fish over 1 kg (2 lb) in weight are very strong fighters when caught on a rod.A. Lawrence Wells (date unknown).
|
|
C. a. var. glabriusculum can be found in Texas, Arizona, and Florida in the Southern United States, the Bahamas, the Caribbean, Mexico, Central America, and Colombia. It prefers well-drained soils, such as silty or sandy loams, and of annual precipitation in Puerto Rico. It may be found in areas with a broken forest canopy or disturbed areas that lack tree cover if moisture and soil are favorable.
|
|
Part of the formation in the west is composed of carbonates (domal stromatolites with an east to west orientation and thin laminae of less than ). The stromatolites occur in a wide zone, reaching from east of the Uniab Fault to east of the Bergsig Fault system. The eastward sections comprise oolitic conglomeratic horizons of up to thick. The carbonates (mudstones and marls) are overlain by silty, partly calcareous shales.
|
|
The Grinstead Clay comprises mudstones and silty mudstones with siltstone, ironstone and shelly limestone. This member is lithologically similar to the older Wadhurst Clay and also has weathered red mottled clays at its top. The formation is up to 20m thick but is only present around the border of East Sussex and West Sussex. It can be further subdivided into the Lower Grinstead Clay and Upper Grinstead Clay.
|
|
The uplifting of the Potrillos, together with the subsidence of nearby grabens, occurred in the late Tertiary. The eastern boundary of the horst is the active Robledo fault, which has created a scarp on the eastern side of the range. The basal rocks in the range are sedimentary, and consist of limestone, dolomites, and silty beds of Middle Permian age. The thickness of these beds is approximately 950 feet (300 m).
|
|
Diploprion bifasciatum prefers coastal habitats in semi-silty conditions but also occur in the vicinity of caves and crevices in rocky and coral reefs. It is found at depths of . It is a predatory species that is able to feed on relatively large prey which is captured and swallowed whole with its highly protrusible jaws. Analaysis of stomach contents has shown that it feeds mainly on fishes and crustaceans.
|
|
They prefer clean sandy substrates, rarely occupying silty or seagrass beds and have never been found in estuarine waters. Genetic analysis has shown that migration does not occur in the species, instead they tend to remain in the same area throughout their life cycle.Dixon, P.I., R.H. Crozier, M. Black and A. Church. (1987) Stock identification and discrimination of commercially important whitings in Australian waters using genetic criteria (FIRTA 83/16).
|
|
The Carlin type deposits show enrichment in the elements gold, arsenic, antimony, mercury, thallium and barium. This enrichment is created by hydrothermal circulation with a temperature of up to 300 °C. The underlying rocks out of which the minerals are dissolved are normally silty carbonates, although also silicates and other sediments are possible. The source of the heating for the water in the hydrothermal circulation is still under discussion.
|
|
It also dates to the Middle Silurian and contains gray- red-purple to dusky red hematitic sandstone that is interbedded with silty clay shale. This formation is thick. The Lower Member of the Rose Hill Formation occurs on the westernmost extremity of the hill. The Keefer Formation and the Mifflintown Formation also common on the hill, but at lower elevations than the Lower Member of the Rose Hill Formation.
|
|
The Kayenta Formation was deposited in an environment of braided rivers and dune fields,Harshbarger, J., Repenning, C., and Irwin, J. 1957. Stratigraphy of the uppermost Triassic and the Jurassic rocks of the Navajo Country. United States Geological Survey Professional Paper, 291: 1-74 similar to northern Senegal today. Dinnebitodon was a terrestrial animal, living in the "Silty Facies" of the Kayenta Formation, which would have represented an interdunal river deposit.
|
|
The siliciclastics are quartz and vary in color from white to light olive gray. They are unconsolidated to poorly indurated (hard), slightly clayey sands with minor phosphate to light gray to bluish gray, poorly consolidated, variably silty clay (Dogtown Member). The siliciclastics are sporadically fossiliferous and often contain oyster shells as found in the Seaboard Air Line Railroad site. The carbonate sediments contain phosphate and are white to light olive gray.
|
|
At the end of the trunk was a paddle-like tail. There were also a pair of large extensions at the front of the head shield. They had a pronounced "elbow" and ended in four long spines, looking rather like fingers. There were three appendages on the bottom of the head shield on each side, and these are assumed to have supported the creature on the sandy or silty sea bottom.
|
|
The Cortez Mine is located in the Crescent Valley which is between the Shoshone and Cortez Mountains, a basin in the traditional Basin and Range setting of Nevada. Precious metal mineralization came during Jurassic-Miocene periods. The Pipeline complex lies within of silty limestone in what is called the Silurian Roberts Mountain Formation. Above this is Devonian Wenban Limestone, which acts as the host rock of the Cortez Hills deposit.
|
|
The lagoon damselfish is found in sheltered reefs and lagoons, often in areas of high turbidity and a silty substrate at the base of branching corals. They are found at depths of . They are detritovores and the species has up to three times the number of gill rakers than other damselfish which are for feeding on fine detritus. They are territorial and defend a patch of algal covered reef.
|
|
It is widely distributed throughout the tropical waters of the central Indo-West Pacific region.> The humpback grouper lives in clear waters from lagoons and seaward reefs with a preference for dead or silty areas. They are found in a range of depth from . In 2012, a single individual was speared in the waters off South Florida, raising fears that it could become invasive, similar to the lionfish.
|
|
Nutmeg hickory grows on a variety of loamy, silty, or clayey soils that may be described as moist, but well or moderately well drained and amply supplied with mineral nutrients. The species most often is found in minor stream bottoms, on second bottom flats, and on slopes or bluffs near streams. The principal soils on which nutmeg hickory is generally found are in the orders Alfisols and Inceptisols.
|
|
The Gangetic whiting is found on the southern Asian coast from Puducherry in the east, northward along the Coromandel Coast and the Ganges delta, Myanmar, Malaysia and occasionally as far south as the Indonesian archipelago. The species is often found on silty or muddy substrates in shallow, open bays and estuaries along the coast. Juveniles usually migrate into the upper reaches of estuaries for protection against predation by larger species.
|
|
It natively inhabits rivers, and standing water with a silty bottom. They live in a tropical climate in water with a 6.0 - 6.5 pH, a water hardness of 8 - 15 dGH, and a temperature range of 68 - 77 °F (20 - 25 °C). It feeds on benthic and planktonic crustaceans, and insects. This species can grow in length up to TL. It can also be found in the aquarium trade.
|
|
Its soils are mostly dark reddish brown silty clays developed on long-weathered volcanic ash which supports ranchland where cattle and horses are raised. There also is a headquarters unit of the Maui Invasive Species Committee (MISC) at the Haleakala Experiment Station of the University of Hawaii. The nearest town is Makawao. The major landowner in the area is the family descended from Henry Perrine Baldwin (1842–1911).
|
|
The pansy-like body bears many small, anemone-like feeding polyps. A cluster of tentacleless polyps form an outlet valve that releases water to deflate the colony. If the colony is on a sand bar at low tide, it usually deflates and becomes covered with a thin film of silty sand. Small white dots between the feeding polyps are polyps that act as pumps to expand the deflated colony.
|
|
S. squamata is found on both sides of the Atlantic Ocean, the Mediterranean Sea, the Caribbean Sea and the Gulf of Mexico. It digs a burrow in the sediment in the lower parts of the shore and the shallow sublittoral. Typically it chooses sandy beaches in the intertidal zone and sandy and silty sediments in subtidal flats. It tolerates low salinity levels and is often found in estuaries.
|
|
The lowland valleys of the Albane and Bèze consist of recent carbonate alluvium in the Bèze basin but clayey-silty soil in the Albane basin. The upstream part of the Bèze basin is fed by an important karst network replenished in part by losses from the Tille and the Venelle rivers. Some rainwater supplies these aquifers. The source of the Bèze is the outlet of this important network.
|
|
This type of riparian vegetation and its accompanying ecosystem is found in the Western Cape, South Africa, on freshwater floodplains, along the lower stretches of rivers and around seasonal vleis and estuaries. The terrain is typically flat and the soil is rich and silty. It is restricted to a winter rainfall area. This used to be one of the major ecosystems on the Cape Flats of Cape Town.
|
|
Area covered by water excludes the Mississippi River The parent material of the "Memphis silt loam" is Pleistocene loess. Loess is a fine-grained, slightly coherent, silty, windblown sediment. Eroded loess consists of extremely fine, sandy particles and forms silt in environments that provide sufficient moisture of the soil, usually caused by occasional flooding or precipitation. Soil derived from eroded loess is sometimes also referred to as loess.
|
|
With the porosity properties of silty sandstone, and the ability of clay-rich soil to absorb tremendous amounts of water, it is not surprising that Spanish Fork canyon has experienced several landslide events throughout its geologic history. The thistle slide has reactivated several times since its main activity in 1983, and will continue to do so until the ideal landslide conditions created by the local weather patterns change.
|
|
The valley in which Puyallup was originally settled forms the town. Its fertile soil is optimal for the acres of daffodils which were grown for distribution worldwide, and are featured in the town's annual spring parade. The Puyallup River meanders between the hills, through the glacial basin, from its namesake glacier on Mt. Rainier, terminating in Puget Sound at the Port of Tacoma. It is cold, silty, and brown, sometimes green.
|
|
The species' extinction is believed to have been caused by human encroachment. In the nineteenth and early twentieth centuries there were no regulations on deforestation or cultivation, and this caused the habitat of the harelip sucker to become very silty. This impeded their feeding because they fed by sight, but it also killed the mollusks and crustaceans which were the harelip sucker's primary prey. Essentially they starved to death.
|
|
The eastern blacknose dace eats many small insects and other invertebrates including Acentria ephemerella, telmatogetoninae, chironomidae, worms, algae, and small crustaceans such as young crayfish. They also feed on some plant species. Young fry forage in shallow silty water while adults move into riffles and deep eddying pools to find invertebrates. Many larger fish feed on the eastern blacknose dace including smallmouth bass, brook trout, brown trout, and rainbow trout.
|
|
The New Idria Serpentine is the source of the quicksilver mineralization, and chrysotile asbestos. Bordering this plug of rocks is the Upper Cretaceous Panoche Formation consisting of silty-shale and concretionary sandstone up to 20,000 feet thick. Most of the New Idria mine production came from the hydrothermally altered shale controlled by faulting. Quicksilver deposits also occur in silica-carbonate rocks produced from serpentine, known as the "Quicksilver Rock" of California.
|
|
Soil textures range from silty clay loam to sandy loam. The region covers in Oregon and in Washington, with the largest contiguous areas found near Grays Harbor, Willapa Bay, the mouth of the Columbia River, Tillamook Bay, and along the southern Oregon Coast. Public lands include the Grays Harbor, Willapa, Nestucca Bay, Siletz Bay, and Bandon Marsh National Wildlife Refuges, the Oregon Dunes National Recreation Area, and numerous state parks.
|
|
Suspended particles within the wind may impact on solid objects causing erosion by abrasion (ecological succession). Wind erosion generally occurs in areas with little or no vegetation, often in areas where there is insufficient rainfall to support vegetation. Fields outside Benambra, Victoria, Australia suffering from drought conditions in 2006. Loess is a homogeneous, typically nonstratified, porous, friable, slightly coherent, often calcareous, fine-grained, silty, pale yellow or buff, windblown (Aeolian) sediment.
|
|
Unlike most other rupicolous (living among rocks) members of the Cordylidae, sungazers live in self-excavated burrows (typically deep, and long) in the silty soil of the Themeda grassland in South Africa. They are insectivores, but occasionally eat small vertebrates. These colonial, ovoviviparous lizards reproduce every 2–3 years, and only produce one or two offspring per breeding cycle. They are long-lived, and captives have been recorded surpassing 20 years of age.
|
|
Low, rolling loess- covered hills with areas of exposed glacial till are characteristic of the Loess and Glacial Drift Hills. Loess deposits are generally thinner than those in 47h, and historically there was less oak-hickory forest and more extensive tallgrass prairie than found in 47h. The flatter loess hills have a silty, clay loam soil that supports cropland, while rangeland is somewhat more extensive on the deep clay loams formed in glacial till soils.
|
|
Inimicus is a genus of venomous fishes, closely related to the true stonefishes. This genus is a member of the family Synanceiidae (devilfishes, goblinfishes, and stonefishes) of the ray-finned fish order Scorpaeniformes. These benthic fishes are found on sandy or silty substrates of lagoon and seaward reefs, in coastal regions of tropical oceans. The ten described species are collectively known by various common names, including ghoul, goblinfish, sea goblin, spiny devilfish, stinger, and stingfish).
|
|
The genus Margaretbarromyces is known only from the single holotype, a complete ascoma like fungus fruiting body. The specimen, AW 400 Htop 0-12, is currently residing in the paleobotanical collections housed by the University of Alberta, Edmonton, Alberta, Canada. The specimen was collected south of the Campbell River on the eastern shore of Vancouver Island, British Columbia, Canada. The fungus specimen was preserved in a calcareous nodule recovered from a silty mudstone matrix.
|
|
Second, these suspended particles may impact on solid objects causing erosion by abrasion (ecological succession). Wind erosion generally occurs in areas with little or no vegetation, often in areas where there is insufficient rainfall to support vegetation. An example is the formation of sand dunes, on a beach or in a desert. Loess is a homogeneous, typically nonstratified, porous, friable, slightly coherent, often calcareous, fine-grained, silty, pale yellow or buff, windblown (Aeolian) sediment.
|
|
The butter sole (Isopsetta isolepis) is an edible flatfish of the family Pleuronectidae. It is a demersal fish that lives on soft, silty bottoms in temperate waters at depths between . Its native habitat is the northeastern Pacific, from the Bering Sea and the Aleutian Islands, along the coasts of Alaska, Canada, and the USA as far south as Ventura, California. It grows up to in length, and can live for up to 11 years.
|
|
Richmond, G.M. and D.S. Fullerton, 1986, Summation of Quaternary glaciations in the United States of America, Quaternary Science Reviews. vol. 5, pp. 183–196. Clayey tills and large boulders, called "glacial erratics", were left on the hillsides during the period when ice sheets covered eastern Nebraska two or three times. During various periods of the remainder of the Pleistocene and into the Holocene, the glacial drift was buried by silty, wind-blown sediment called "loess".
|
|
Keszthely is the site of the Festetics Palace and Balatonfüred is a historical bathing town which hosts the annual Anna Ball. The peak tourist season extends from June until the end of August. The average water temperature during the summer is , which makes bathing and swimming popular on the lake. Most of the beaches consist of either grass, rocks, or the silty sand that also makes up most of the bottom of the lake.
|
|
A particle size analysis of the soils indicates that the residual soil consists of mainly silt and clay (approximately 95%) and that soil textures are silty clay or silt clay loam. The soil colors of the residual soil are dark brown (7.5YR 3/4) through yellowish red (5YR 4/6). The pH of the residual soil ranges from 4.3 to 5.1. The major minerals of the parent rocks were quartz, biotite, chlorite, and plagioclase.
|
|
After the last mine shut down in 1992, the community transformed into a retirement destination. Tourism in the area also began to grow and is now the area's main industry. In 1971 workmen excavating in an open-pit copper mine at Babine Lake discovered the partly articulated skeleton of a Columbian Mammoth. The bones were taken from silty pond deposits overlain by very thick boulder-clay deposited by the last glacier that covered the area.
|
|
Stane Street as it passes Cherkley Court. From the 1st to the 4th centuries AD, Ewell was a large Romano-British town. Stane Street approaches from the northeast, leaving the silty clays of the Reading Beds and moving briefly onto the better-draining Thanet Sands. Close to the present Church Street, the road makes a 23° turn to the south, to allow it to reach the Upper Chalk of the North Downs more quickly.
|
|
Lake Galichskoye () is a freshwater lake in the northern part of Kostroma Oblast, Russia that takes its name from the old town of Galich sitting on its south bank. It is situated at the height of 100 meters above mean sea level, stretching for 17 km from west to east. The lake area is 75.4 km2. The lake is shallow (up to 5 meters deep), its banks are marshy, and the bottom is silty.
|
|
The top of the dam on Lake Chillisquaque Lake Chillisquaque is dammed by an earth-fill dam known as the Lake Chillisquaque Dam. Located on the southern side of the lake, the dam is long and high. The dam is wide at its highest point and the top of the dam forms an access road. The inner part of the dam is a silty clay material, while the outside is made of weathered shale.
|
|
Middleton Reef is a kidney-shaped structure, 8.9 km by 6.3 km. On the north side is an entrance into the interior lagoon which is protected by the hard algal ridge and extensive reef flat that forms the outer margin to the reef. Its cay, known as The Sound, measures 100 m by 70 m. Its shallow lagoon has a sandy to silty bottom that contains numerous patch reefs and areas of coral pavement.
|
|
Most cetaceans live in the open ocean, and species like the sperm whale may dive to depths of in search of food. Sirenians live in shallow coastal waters, usually living below sea level. However, they have been known to dive to to forage deep-water seagrasses. Sea otters live in protected areas, such as rocky shores, kelp forests, and barrier reefs, although they may reside among drift ice or in sandy, muddy, or silty areas.
|
|
Since the 1970s no further research has been done on the archaeology of the Late Holocene in the Baringo District. The area of the archaeological site is currently extensively cultivated and subject to slash-and-burn agriculture. Furthermore, because of the loose silty clay loams the area is eroding quickly and the archaeology is in danger of being lost. The Ndau river is also cutting deeper into its bank washing away the archaeological material.
|
|
Inimicus sinensis, also known as the spotted ghoul, Chinese stinger, spotted stingerfish, or spotted stonefish, is a member of the Inimicus genus of venomous fishes. It is a member of the Synanceiidae (devilfishes, goblinfishes, and stonefishes) family of the Scorpaeniformes order of ray- finned fishes. These benthic fishes are found on sandy or silty substrates of lagoon and seaward reefs, in coastal regions of tropical oceans.Froese, R. and D. Pauly. Editors. 2010.FishBase.
|
|
Inimicus filamentosus, also known as the filament-finned stinger, barred ghoul, two-stick stingfish, or devil scorpionfish, is a member of the Inimicus genus of venomous fishes. It is a member of the Synanceiidae (devilfishes, goblinfishes, and stonefishes) family of the Scorpaeniformes order of ray- finned fishes. These benthic fishes are found on sandy or silty substrates of lagoon and seaward reefs, in coastal regions of tropical oceans.Froese, R. and D. Pauly. Editors. 2010.FishBase.
|
|
The formation overlies the Lytle Formation and is overlain by the Glancairn Formation and comprises resistant, brown-weathered sandstones, and dark shales and siilstones, also described as bioturbated brownish sandstones with black and grey silty or shaley sandstone intervals. The formation was deposited in a variety of near-shore and/or marginal marine environments. The tracks occur in the upper part of an estuarine point bar sequence, overlain by brackish bay or lagoon deposits.
|
|
The Tereñes Formation or Tereñes Marl is a Late Jurassic (Kimmeridgian) geologic formation in Asturias, Spain. The grey marls of the formation were deposited in a lagoonal environment at a muddy coast along a temporary inland sea. The lower section of the formation comprises silty and chalky sandstones with desiccation cracks and ripple marks, then becomes a bituminous, prominently ostracod-bearing, pelecypod shell chalk, lime chalk marl and marl.Tereñes Formation at Fossilworks.
|
|
Archamia bleekeri, also known as Gon's cardinalfish, is a species of fish in the family Apogonidae, the cardinalfishes. It is native to the coastal waters of the Indian Ocean and the western Pacific Ocean from Africa to Indonesia and from Taiwan to Queensland, Australia. This species occurs in mangrove forests and reefs, and is an inhabitant of shipwrecks, preferring silty areas with muddy or sandy substrates. This species grows to a total length of .
|
|
Bujeo soil profile Bujeo is a type of soil found on the countryside of Andalusia , mainly the area of the Guadalquivir valley. The color ranges from yellowish brown to olive brown gray and dark gray to almost black, depending on their composition. One of its main features is its columnar structure strong and deep cracks in the dry state when dealing with materials rich in clays expansive. The texture is silty clay to clay.
|
|
Above the Thanet Sand are the Upnor Formation, a medium sandstone, and the sandy clays of the Harwich Formation at the Paleocene–Eocene boundary. The highest cliffs, rising to a maximum height of about to the west of Reculver, have a cap of London Clay, a fine silty clay of Eocene age. The surface consists mainly of flint gravel with some areas of brickearth, both of which are glacial deposits.Matthews, Thompson & Golding, p.
|
|
The city has a handful of freshwater lakes and water tanks such as Madivala tank, Hebbal tank, Ulsoor lake and Sankey Tank. Groundwater occurs in silty to sandy layers of alluvial sediments and jointed quartzite. The rock types prevalent in the district belong to the Saugar, Charnokite and Peninsular Gneissic Complex (PGC) groups. The PGC is the dominant group of rocks and covers two-thirds of the area and includes granites, gneisses and migmatites.
|
|
The Spray River Group was deposited on the continental shelf along the western margin of the North American craton. It is subdivided into two formations: the Sulphur Mountain Formation at the base and the Whitehorse Formation at the top. The Sulphur Mountain Formation consists of dolomitic and calcitic siltstones, silty dolomites, dolomitic limestones, and very fine-grained dolomitic quartz sandstones. The Whitehorse Formation consists of dolomites, dolomitic siltstones and limestones, and dolomitic and calcitic quartzites.
|
|
The northwestern part of the Lochmaben Basin also has lavas of the Carron Basalt Formation at the base of the sequence. These are overlain by interbedded silty sandstones and breccio-conglomerates of the Hartfield Formation. The Hartfield Formation passes up into the thick aeolian sandstones of the Corncockle Sandstone Formation. The uppermost part of the succession is the Lochmaben Formation formed of interbedded siltstones and fine-grained sandstones with layers of coarse-grained sandstone.
|
|
The Winnipeg Daily Tribune, 30 May 1898 By the end of the season in December, the steel reached beyond Duck RiverMinnedosa Tribune, 15 Dec 1898 at today's Cowan.Morning Telegram, 10 Feb 1899 The width of the mouth of the shallow and silty Nelson River required Port Nelson's harbour facilities to be built on an artificial island at the end of an causeway. In December 1898, the emerging rail network became the Canadian Northern Railway (CNoR).
|
|
The formation is composed primarily of red and grey hematitic, sandy, calcareous and argillaceous shales with localized greenish banding. Colouration is connected to post-depositional processes: red portions are the result of oxidation of iron-bearing minerals and green comes from reduction, possibly by acidic groundwater. The formation also contains thin layers of calcareous sandstone, bioclastic, argillaceous and silty limestone, as well as calcareous sandstone. Coarser layers become much thicker in New York.
|
|
The Joli Fou shale and Viking (Bow Island) sand, plus lower Colorado Group shales cover the Blaimore Group in southern Alberta. The Colorado Group (known locally as the Alberta Group) occupies the Cordilleran foothills with the 1700 foot thick Blackstone Formation near Nordegg, which holds silty and platy shales, together with the Cardium Formation marine sandstone and shales, and the Wapiabi Formation which reaches up to 2000 feet thick with mudstone, ironstone and ammonite fossils.
|
|
The slender grouper is carnivorous, feeding mainly on other fish such as goatfish but possibly also on invertebrates. Juvenile slender groupers are aggressive mimics of the red-lined wrasse, Halichoeres biocellatus and the silty wrasse, Halichoeres purpurescens. They resemble them in appearance and in behaviour which lulls a potential prey fish into a false sense of security and enables the grouper to approach it without detection.Aggressive mimicry The Gale Encyclopedia of Science.
|
|
It is common for this species to occupy the areas of Indo-Pacific, Red Sea, East Africa, Hawaiian, Marquesan and Ducie islands, north to the Ryukyu and Ogasawara islands, south to the Great Barrier Reef, Lord Howe Island, and Rapa. The gracile lizardfish inhabits sand, silty reefs, shallow lagoons, reef flats, and sheltered seaward reefs. The diet of the gracile lizardfish includes other fish. The species is recorded to be active at night.
|
|
Qilla Abdullah is a small valley bordered by mountains. The valley floor is covered with unconsolidated alluvial sediments that are mostly composed of clay, silt, silty clay and clayey silt. All these sediments were deposited in the valley by the seasonal streams that flow across the valley (generally north to south). The soil is of loamy nature in the Gulistan area, while the soil of Tehsil Chaman is sandy clay—gravel (admixture).
|
|
The only known specimen of Kayentavenator, UCMP V128659, was recovered from the Silty Facies Member of the Kayenta Formation, in northeastern Arizona. A definitive radiometric dating of this formation has not yet been made, and the available stratigraphic correlation has been based on a combination of radiometric dates from vertebrate fossils, magnetostratigraphy and pollen evidence.J. M. Clark and D. E. Fastovsky. 1986. Vertebrate biostratigraphy of the Glen Canyon Group in northern Arizona.
|
|
The Turkey Ridge is commonly mapped in the Mahantango Formation, or included in the Montebello Formation (Dmot), and only the Shamokin correlates with the Marcellus on adjacent map sheets. In extreme eastern Pennsylvania, the Broadhead Creek member, a dark gray silty shale with dark gray shaly limestone concretions, appears above the Stony Hollow and Union Springs, in a layer up to thick. Illustration of a Cephalopod (Goniatites vanuxemi) fossil from the Marcellus Formation.
|
|
Tuna from waters around developing Asian nations had particularly high levels of TBT. Regulation of TBT is not enforced in Asia as rigorously as in Europe or US. Studies have shown that TBT is detrimental to the immune system. Research shows that TBT reduces resistance to infection in fish which live on the seabed and are exposed to high levels of TBT. These areas tend to have silty sediment like harbours and estuaries.
|
|
The Broad Vein Mudstone Formation (commonly known as the Broad Vein, historically known as the Red Vein and in Welsh as Y Faen Goch) is an Ordovician lithostratigraphic group (a sequence of rock strata) in Mid Wales. The rock of the formation is silty mudstone, intensely bioturbated in places. It varies in colour from a pale to a medium blue. This formation has been commercially quarried as slate in several locations along its length.
|
|
The bed of the Goldthwait sea had inter-layered coarse sands and silty clays around its margins, and massive light gray fine clays further down. Rebound has exposed these sediments along the Saint Lawrence river and estuary. The bed of the Upper Saint Lawrence Estuary has glacial tills and bedrock covered by upwards of of bluish-gray marine clays dating to the Goldthwait age. Three type of sediment can be seen along the Quebec coast.
|
|
This first oil field was called the "First Cat Creek sand" and it produced the majority of the oil at the site, and was the largest with an average of . This was followed by exploration in second Sand Creek Area which produced oil from 60 wells. The fracture shale zone and the silty sandstone (above the Kootenai) were also exploited. However, the overall picture was a record maximum production from the West Dome Area.
|
|
The subadult specimen UMNH VP 16878 was found scattered across an area of , and the high degree of disarticulation and broken parts indicate that the specimen was skeletonized and decomposed before its burial in silty mudstone lithofacies. Levitt reported that every bone of the assigned subadult or adult specimen UMNH VP 21339 appeared to have been broken before depositing, and its matrix is stacked siltstones and mudstones with minor sandstones, which suggests a pond environment.
|
|
Rangdum, though on the northern side of the Pensi-la, is regarded as socially and culturally part of Zangskar rather than of Suru. Confluence of the Indus (left) with the silty Zanskar (top) Zanskar consists of troughs of two rivers, the Stod (Doda) and the Lungnak (Tsarap Lingti). One of the Lungnak's main tributaries is the Tsarap, which drains portions of northeastern Himachal Pradesh and valleys just 20 kilometers northwest of Tso Moriri (lake).
|
|
Much of the area's limestone bedrock is exposed on elevated terrain, which has a shallow, discontinuous cover of dark gray stony clay (Eckrant series). Most valley bottoms have deep, dark brown silty clay (Krum series) or clay loam (Pratley series). Deposits of gravel, sand, and loam (Orif-Boerne association) lie within a few hundred feet of the Sabinal River. All of these soils have free calcium carbonate throughout their profiles and are moderately alkaline.
|
|
The specific name refers to its finding place Nǎlaț-Vad. The holotype, UBB NVM1, was found in the Hațeg Basin, in a silty mudstone layer of the Sânpetru Formation, dating from the early Maastrichtian. It consists of a partial skeleton lacking the skull. It contains three dorsal vertebrae, at least nine caudal vertebrae, twelve chevrons, the right half of the pelvis, a left ischium, the lower end of the right thighbone, and two toe claws.
|
|
Percentage of sand, silt and clay varies widely with location and season with more percentage of sand in post monsoon season than in pre- monsoon. Silt and clay contents are higher in pre-monsoon. Sand grains fall mainly under the medium to very fine sand grade of Wentworth grain size scale. The northern part is silty or clayey centre mostly sandy and southern part mostly muddy but with great variations in between.
|
|
Moraines south of Lake Michigan and southwest of Lake Erie. A composite of three maps (Leverett 1915) (Leverett 1902) (Larsen 1986) and other sources. Colors represent moraines from the same time period of the Wisconsin Glacial epochIts clay-rich lithology contrasts greatly with the underlying sandy and silty till. Reexamination of western Wabash County road cuts indicates that the clayey till is present there, but is generally less than , thus within the leached portion of the soil profile.
|
|
The region is predominantly agricultural, with some wetlands, grassland, and forested areas. The Wisconsin DNR labels the majority of the landtype as the Watertown drumlins: "the landform pattern is undulating till plain with drumlins, lake plains, and muck areas common. Soils are predominantly moderately well drained silt and loam over calcareous sandy loam till or silty, loamy and clayey lacustrine." Small portions are associated with the Jefferson Lake Plains; the entire area is contained within the southeast glacial plains.
|
|
Carex lyngbyei is a species of sedge known by the common name Lyngbye's sedge. It is native to the west coast of North America from Alaska to California, where it "is the common sedge of the Pacific coastal salt marshes."Flora of North America It is also known from Greenland and Iceland. It prefers to grow in silty sediment rather than sandCarex Lyngbyei Soil Medium Experiment and in habitat with brackish water, such as salt marshes.
|
|
Potamogeton compressus is not in cultivation. It could probably be cultivated in rather silty ponds, so long as they are regularly cleaned out in order to prevent other more competitive plants from excluding it. Cultivation experiments for conservation purposes have successfully grown plants to maturity from turions planted in late winter, but adult plants are more difficult to establish due to their limited root system and fragile nature. High mortality was also observed due to snail predation in culture.
|
|
Aptly named because of its distinctive shape when seen from above, the Bow Tie Vineyard was bought and planted by J Vineyards & Winery in 2009. It is a 37.8 acre vineyard planted with Pinot noir and Chardonnay and located on the Russian River. The soil is a variety of silty clay loam and sandy loam: Arbuckle, Cortina, Yolo, and Zamora loam and silt. Like the Bow Tie Vineyard, the Canfield Vineyard was bought and planted in 2009.
|
|
Thalattosaurus (left) with relative 182x182px Thalattosaurus alexandrae was about around 2 meters (7 ft) long and an excellent swimmer. Thalattosaur limbs were generally not paddle- like, but Thalattosaurus limbs were. It had a long flattened tail and claws possibly used to withstand the force of the surf when crawling up on shore. The Sulphur Mountain Formation, where remains of Thalattosaurus have been found, consists of a series of marine siltstones, silty limestones, and fine gained sandstones.
|
|
The Wianamatta Group has been inferred to represent a cycle of basin infilling associated with the migration of a large delta front from west to east. The Ashfield Shale was deposited in a low energy marine environment and preserves laminated silty sediments. The Minchinbury Sandstone comprises a set of sandy barrier islands at the former shoreline. The Bringelly Shale was deposited in a swampy alluvial plain with meandering streams flowing from the west forming discontinuous beds of sandstone.
|
|
The stingrays in the St. Johns River system represent the only permanent freshwater elasmobranch population in North America. This species inhabits shallow coastal waters over sandy or silty bottoms, estuaries, and lakes. They prefer water temperatures over and can tolerate temperatures over . These stingrays conduct seasonal migrations to stay in warmer water: they are only present in the northerly Chesapeake bay in the summer and fall, and elsewhere they migrate to deeper water in the winter.
|
|
This Felta soil is characterized by an upper surface grayish-brown color and texture of a fine, sticky and plastic nature. West of U.S. Highway 101, Piner Creek flows over the Santa Rosa Plain at gradients of less than two percent. Here the predominant soil type is Zamora silty clay loam, which has been deposited as an alluvial fan as the floodplain formed. The upper soil surface of the Zamora material is grayish- brown hard, firm, sticky and plastic.
|
|
This biomass becomes available to bottom-feeding species and to the fish that feed on them. The catch of yellow perch increased 5-fold after the invasion of zebra mussels into Lake St. Clair. Zebra mussels attach to most substrates, including sand, silt, and harder substrates, but usually juveniles prefer harder, rockier substrates on which to attach. Other mussel species frequently represent the most stable objects in silty substrates, and zebra mussels attach to and often kill these mussels.
|
|
The formation contains abundant fossil remains of the oyster Ostrea quadriplicata, a fossil of early Cretaceous age. Dinosaur trackways are preserved in the sandstone and silty sandstone horizons of the formation, which is part of the "dinosaur freeway" megatracksite of New Mexico, Colorado, and Oklahoma. Dinosaur tracks were discovered in the Pajarito Formation and underlying Mesa Rica Formation at the spillway of Clayton Lake State Park in 1982. The Clayton Lake trackways are unusual in showing trail dragging traces.
|
|
Centriscus scutatus is a slender fish that reaches a length of . It is found at depth between 2 and 333 m (typically 2–15 m) in the Indian and Pacific oceans, from the Red Sea and Persian Gulf up to Japan, New Caledonia and Australia. This coastal species inhabit mud or silty sand next to sea grasses or corals. It swims almost vertically, sometimes in large groups, with head pointed downwards, and feeds on small crustaceans.
|
|
Overlying unconformably in the Cau Formation, the Dua Formation is between 200m to 800m thick, composed of light and bright grey sandstone, interbedded with blackish-grey silty clay. The sandstone has characteristics of fine to medium grained, angular, quarts, with carbonate cement. This formation also has glauconite corresponding with fossil fragments. The overall lithology of the Dua Formation in the Nam Con Son Basin consist of coastal plain sandstones and has claystones and interbedded minor coals.
|
|
National Zoo in Washington, DC Black-tailed prairie dog distribution is not limited by soil type, but by indirect effects of soil texture on moisture and vegetation. Colonies occur in many types of soil, including deep, alluvial soils with medium to fine textures, and occasionally gravel. Soil not prone to collapsing or flooding is preferred. Though they do not select specific types of soil to dig burrows, silty loam clay soils are best for tunnel construction.
|
|
Others, such as smectites, expand or contract considerably when wet or dry, and are not suitable for building. Loam is a mix of sand, silt and clay in which none predominates. Soils are given different names depending on the relative proportions of sand, silt and clay such as "Silt Loam", "Clay Loam" and "Silty Clay". Loam construction, the subject of this article, referred to as adobe construction when it uses unfired clay bricks, is an ancient building technology.
|
|
In spring thaw, the ground thaws from the top down, so water is trapped between the pavement above and the still-frozen soil underneath. This layer of saturated soil provides little support for the road above, leading to the formation of potholes. This is more of a problem for silty or clay soils than sandy or gravelly soils. Some jurisdictions pass frost laws to reduce the allowable weight of trucks during the spring thaw season and protect their roads.
|
|
Cable landing points are usually carefully chosen to be in areas: # that have little marine traffic to minimise the risk of cables being damaged by ship anchors and trawler operations; # with gently sloping, sandy or silty sea-floors so that the cable can be buried to minimise the chance of damage; # without strong currents that would uncover buried cables and potentially move cables. Such locations are rare, and will usually be the shared landfall point for several cable systems.
|
|
This program conducted full-scale testing of experimental walls with different configurations and developed analysis procedures for use in design. The United States first used soil nailing in 1976 for the support of a deep foundation excavation in dense silty sands. Soil nailing was implemented in the expansion of The Good Samaritan Hospital in Portland, Oregon. This retaining system was produced in approximately half the time at about 85% of the cost of conventional retaining systems.
|
|
A prominent nepheloid layer exists in the Gulf of Mexico extending from the delta of the Brazos River to South Padre Island. The layer of turbid water can begin as shallow as 20 meters and is caused mostly by clay run-off from multiple rivers. The silty bottom of the gulf also contributes to the high turbidity. Due to the blockage of light by this nepheloid layer, algae and coral are sparse, resulting in an animal- dominated community.
|
|
The depth, texture and composition of soils can influence its water retaining and draining ability. Soils containing large amounts of organic material tend to have the highest water retention abilities. These types of soils include deep loams, silty soils like what is typically found on the fertile valley floors such as in the California's Napa Valley. Clay particles have the potential to remain in colloidal suspension for long periods of time when it is dissolved in water.
|
|
The Crete Senesi lie over plio-pleistocene silty-clay overconsolidated marine deposits, rich in sodium. Deep, narrow cracks (joints; ) cut the deposits to about 10m from the surface, favouring localized water infiltration and the excavation of subterranean tunnels. In natural, unstressed conditions, soils can develop as deep as 1.5 m, with removal of sodium by the leaching action of infiltration water. The present situation is characterized by the presence of eroded or poorly developed soils especially in the badlands.
|
|
In the southwest the lake is fed by the Mustafakemalpaşa River, which has formed a silty delta. Water leaves the lake by way of the Ulubat stream, flowing to the west, and reaches the Sea of Marmara via the Susurluk River. Most shores of the lake are covered in submerged plants, and it has the most extensive white water lily beds in Turkey. Uluabat Lake is one of the breeding areas for the endangered pygmy cormorant (Phalacrocorax pygmeus).
|
|
The flathead sole (Hippoglossoides elassodon) is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on soft, silty or muddy bottoms at depths of up to . Its native habitat is the northern Pacific, from the seas of Japan and Okhotsk, across the Bering Sea and to the coast of North America, as far south as Point Reyes, United States. It grows to in length, and can weigh up to ; females are typically larger than males.
|
|
Landslip Hill is located on the boundary of Southland and Otago, in the South Island of New Zealand, between Tapanui and Pukerau. It is a debris flow feature associated with the Manuherikia Group of fluvial quartz sandstones. Geologists have described the fossil-bearing rocks as forming part of a sequence of "siliclastic fluvial deltaic sands, conglomerates and silty clays".Lindqvist, J. K. and D.T. Pocknall, 1983: Stratigraphy and palynology of Late Oligocene to Miocene lignite bearing sediments, eastern Southland.
|
|
The ice edge east of the glacier was along a line from the Lake Überlingen via the eastern tip of Bodanrück, through Constance and Kreuzlingen to the northern end of the Seerücken. Early in the Constance stage, a proglacial lake formed in the area of today's Seerhein basin and to the west of it. In this lake, extensive silty calcareous, glacilimnic layers were deposited. These appear on the surface in some places on the edge of the valley.
|
|
Cerianthus membranaceus is found on the seabed in shallow water in the Mediterranean Sea, the northern Adriatic Sea and the northeastern Atlantic Ocean, its range extending as far north as Britain. It occurs on sandy or silty substrates where its tube is buried vertically in the sediment. In the Mediterranean, it principally occurs in areas with high levels of organic matter, such as in zones of pollution off Marseille, where it is present at high densities throughout the year.
|
|
The west dam of Diamond Valley Lake Construction of the three dams was completed in 1999, requiring the excavation of of foundation material. The earth fill dam project required about of sand, clay and rock. Much of the materials needed were obtained from the project area. Core materials were obtained from the silty and clayey sandy alluvium in the floor of the reservoir and the rock fill came from the bedrock highlands of the reservoir's south rim.
|
|
The Montney Shale play is in east-central British Columbia."Study analyzes nine US, Canada shale gas plays", Oil and gas Journal, 10 November 2008, p.50. The Montney Formation has a sandy facies in Western Alberta, where oil is produced in the Sturgeon Lakes and Saddle Hills areas. Natural gas is extracted from siltstone reservoir in the Dawson Creek and Pouce Coupe areas and gas rich silty shales occur in the northern and western fringes of the deposit.
|
|
Cove 2 is often used as a training site for open water, navigation and other scuba classes. The site has a moderate slope leading down to depths greater than the recreational limit of 130 feet (40 meters). Because of the easily reached deep areas, technical divers also use Cove 2 for training. The site has a silty bottom, but many submerged logs, pilings and sunken boats (the Honey Bear) that are well decorated with Pacific Northwest marine life.
|
|
The highest elevations are composed of conglomerate rock with small, shallow patches of soil. At the bases, silty clay loam dominates. These geologic conditions restrain water absorption towards the rockier higher elevations, which allow runoff to hydrate the base creating a more habitable (friendly) environment for plants. Because of the transverse (east-west) orientation of the range, this effect is pronounced on the north slope due to the lower rates of evaporation caused by sunlight directed from the south.
|
|
The east side of False Bay also has extensive areas of fine quartzitic sand bottom, and there are also occasional deposits of a very fine low density silty material which is easily disturbed and returned to suspension. This silt generally deposits over the sand and depressions in the reef during relatively long periods of calm seas. There are small areas of shelly gravel and mud near Gordon's Bay between the rocky shoreline reef and the sand bottom.
|
|
The summit area is composed mostly of till (clayey silty gravel) overlying rocks of the Lincomb Tarn Formation. This consists of dacitic lapilli-tuff with andesite sills. The eastern plateau above Thirlmere shows some outbreaks of the volcaniclastic sandstone of the Esk Pike Formation.British Geological Survey: 1:50,000 series maps, England & Wales Sheet 29: BGS (1999) A 16th century mine, Launchy Gill Level, was driven into the fellside below White Crags on the Thirlmere side of the fell.
|
|
C. pennisetiformis is a grass suited to growing in arid and semi-arid environments because it remains green and palatable even in the dry season. It grows best on light sandy or silty soils, in either full sun or partial shade, but cannot tolerate heavy, cracking clays. It can withstand moderate frosts and will survive temporary flooding. In Pakistan there are areas with very low rainfall (under annually), saline soils and a shortage of water for irrigation.
|
|
A species of Acacia, growing as a woody shrub that is straggly in habit. Associated with banded iron formation, the species is found on rocky inclines growing in silty red-brown clay containing pebbles of ironstone or shale. The phyllodes of Acacia karina exhibit hairs closely pressed to the nerve of its structure. Identified from material obtained near Morawa, the known distribution range is the Yalgoo and Perenjori districts of the Eremaean Province in Western Australia.
|
|
The aquatic nymphs live under stones and in silty gravel in the drainage lines. Of particular scientific interest is the species' ability to survive the annual drying of its habitat, both in the egg stage and by burrowing down to a damper level and its seasonal flexibility in growth and emergence times, which enhances survival during the extremes of climate experienced on mountain tops. The species has not been discovered in other similar areas despite deliberate searches.
|
|
With elevations ranging from 2200 feet in the lower drainages to 3600 feet on the ridge crest, Beaverdam Creek wild area is dominated by a mountain ridge with steep sideslopes. A diversity of geologic features is characteristic of the Southern Appalachian Mountains. Geologic rock types are the Erwin Formation with white, vitreous quartzite, interbeds of dark-green, silty and sandy shale, minor siltstones and very fine sandstone; the Hampton Formation with dark greenish-gray, silty and sandy shale, micaceous shale, numerous layers of medium-grained, feldspathic, and thinly bedded sandstone; the Union Formation, a sequence of grey feldspathic sandstone, arkose, conglomerate, greywacke, siltstone and shale, and greenish amygdaloidal basalt flow; and Shady Dolomite, a light gray, well-bedded dolomite with thin to medium-bedded gray limestone, and yellowish brown residual clays with “jasperoid” diagnostic. The area, divided by Holston Mountain, has a northern part with headwater streams that flow north to the South Fork Holston River, and a southern part with streams flowing south into Beaverdam Creek, a tributary of the South Fork Holston River.
|
|
Long (1993) recognises three lithofacies in the Burgsvik beds; a poorly exposed silty/sandy mudstone facies dominant in the lower beds, appearing as interbeds in the middle beds; a fine to very fine sandstone; and a "biofacies" consisting of ooids, oncolites and bioclasts. He challenges three interpretations of the sub-aerial sandstone facies. Contrary to Gray et al.'s (1974) tidal mud flat interpretation, Long surmises that it may represent locally emergent offshore bars, near-shore sands or beach deposits.
|
|
The Northwest Iowa Loess Prairies ecoregion is a gently undulating plain with a moderate to thick layer of loess. It is the highest and driest region of the Western Corn Belt Plains, as it rises to meet the Northern Glaciated Plains (46) of the Dakotas. Although loess covers almost all of the broad upland flats, ridges, and slopes, minor glacial till outcrops occur near the base of some of the side slopes. Silty clay loam soils have developed on the loess.
|
|
The Missouri Alluvial Plain is part of the large, wide, flat alluvial plain found in five neighboring states. Surrounded by bluffs capped with deep loess, the historic island-studded meandering river channel has been stabilized and narrowed to manage discharge and to promote navigation and agriculture. The deep silty and clayey alluvial soils support extensive cropland agriculture. Most of the oak-hickory forest, floodplain forest, and tallgrass prairie has been removed due to conversion to cropland, although some wetlands are being restored.
|
|
The Bass Formation not only contains gray to red-gray dolomite and sandy dolomite but also interbedded purple-brown to dark red and reddish brown sandstone (arkose), and silty sandstone, prominent interbeds of conglomerate, and subordinate interbeds of argillite and limestone. A prominent conglomerate, the Hotauta Member, fills paleovalleys cut into the underlying Vishu basement complex at its base. The Bass Formation also contains stromatolite beds and thin volcanic ash layers. The Hotauta Member is regarded to be fluvial in origin.
|
|
In the Nepal Himalaya, the Lower Gondwana glacial diamictite is unconformably overlain by the fluvial Taltung Formation (Upper Gondwana), which contains abundant plant fossils distributed widely within the Tansen area. Alkali basalt lava flows are interbedded with the fluvial beds in the Lower Taltung. Gravelly braided river facies are shown in the Lower Taltung while silty meandering river facies are displayed in the Upper Taltung, as a result, the sequence is fining upwards. The strata were deposited in a terrestrial basin on Gondwana.
|
|
The Mazon Creek fossils are found in the Upper Carboniferous Francis Creek Shale; the type locality is the Mazon River (or Mazon Creek), a tributary of the Illinois River near Morris, Grundy County, Illinois. The 25 to 30 meters of shale were formed approximately , during the Pennsylvanian period. The fossiliferous concretions are usually found within the thickest deposits of Francis Creek. The concretions occur in localized deposits within the silty to sandy mudstones, in the lower four metres of the formation.
|
|
Whether native ginkgo populations still exist has not been demonstrated unequivocally, but evidence grows favouring these Southwestern populations as wild, from genetic data but also from history of those territories, with bigger Ginkgo biloba trees being older than surrounding human settlements. Where it occurs in the wild, it is found infrequently in deciduous forests and valleys on acidic loess (i.e. fine, silty soil) with good drainage. The soil it inhabits is typically in the pH range of 5.0 to 5.5.
|
|
As collision intensified, subsidence in the foreland basin declined, and sedimentation was replaced by an influx of calcareous silty shales and carbonates. These deposits reflect small transgressive-regressive cycles in a delta-front and delta platform environments. The third stage is represented by regional uplift, which accompanied the collision of an Avalon terrane with a promontory, and subsequently, developed a regional disconformity. The fourth and final stage is represented by tectonic quiescence with a widespread carbonate deposition in a slowly transgressing sea.
|
|
Over the next days the pilot steamer Captain Cook hauled away the mainmast and another charge of gun-cotton was used to blow the foremast out of the submerged hull. The mast and topsail yards sank, and they sent a diver down to clear it so that it might be towed away. The hull of the Colonist was well down in the mud. The wreck lay in 20m of water on a silty bottom and was found on 13 May 2013.
|
|
Most of the soils in the San Mateo Creek drainage area are loamy, well-drained and also fertile in the lowlands. In the mountains the soil cover is very shallow and there are many exposed cliffs, large boulders and outcroppings of sedimentary rock. In the lower watershed are sandy or silty loams which have a clay substructure. These soils are classified as highly fertile and there are a few farms on the foothills and the floodplain of the San Mateo Creek watershed.
|
|
The main stem of the Bremner River below the confluence of its north and middle forks is runnable by boaters who are "seasoned Alaska wilderness travelers with advanced to expert boating skills." Rated Class II (medium) to IV (very difficult) on the International Scale of River Difficulty, the river passes through mountainous terrain and dense forests that make for difficult access and troublesome hiking. Other hazards include cold, swift, silty water; isolation; narrow canyons; brown bears, and strong winds near the mouth.
|
|
Melaleuca quinquenervia in Australia In Australia, Melaleuca quinquenervia occurs along the east coast, from Cape York in Queensland to Botany Bay in New South Wales. It grows in seasonally inundated plains and swamps, along estuary margins and is often the dominant species. In the Sydney region it grows alongside trees such as swamp mahogany (Eucalyptus robusta) and bangalay (E. botryoides). It grows in silty or swampy soil and plants have grown in acid soil of pH as low as 2.5.
|
|
This layer presents lignite, veins of pink carbonate, and silty clays (of predominantly lake origin) containing gastropod and bivalve fossils; it is dated to 260 thousands of years ago (kya). Late Acheulean tools are found associated with hominin remains as yet unclassified. Humans in this habitat lived next to a freshwater lake and killed large mammals such as hippopotamids.DeHeinzelin J, Clark J D, Schick KD. Gilbert WH. (2000) The Acheulean and the Plio-Pleistocene Deposits of the Middle Awash Valley, Ethiopia.
|
|
Guayaquil, the most populated city of Ecuador, is close to significant seismogenetic structures. The commercial center of Guayaquil is established on alluvial clay deposits interbedded with silty and clayey sand sediments, and the southwestern and southern part of Guayaquil directly lies on lands reclaimed from marshland. Large historical earthquakes, including the earthquake of 1953, showed the importance of the assessment of ground effects caused by earthquakes in Guayaquil. A new INQUA Intensity Scale has been proposed to be applied in such assessment.
|
|
Sidibela is located in the northwest of Bafoulabé Cercle. It is bordered to the north and east by the commune of Tomora, south by that of Bafoulabé to the west by that of Ségala in Kayes Cercle and is located some 65 km away from Bafoulabé city. The land is typically rugged and includes plains, plateaus, hills and mountains and has several ponds and seasonal streams. The soils are varied and suitable for agriculture and may be gravelly, silty or clay.
|
|
The soils in Linden are developed from granite, granite gneiss, greenstone and chloritic schist. The terrain ranges from rolling to steep landscapes that are dissected by Goose Creek and its tributaries that feed from runs and springs from the east side of the Blue Ridge Mountains. The rolling uplands contain soils that are loamy to silty and can be shallow to bedrock. On the steeper upland sections the soils are loamy with stones and rock outcrops evident on the surface.
|
|
The Rove Formation is the youngest of the many Animikie layers; it consists of gently tilted fine- grained sediments. It is composed of greywackes and black shale, and contains lower concentrations of iron and taconite than the underlying Gunflint Iron Formation does. The Rove Formation consists of a lower argillite unit, a middle transition unit and an upper thin-bedded greywacke unit. The lower argillite unit is about thick; this layer contains fine-grained greywacke, and silty and graphitic argillites.
|
|
Steinitz' goby shares a large burrow system with alpheid shrimp such as Alpheus purpurilenticularis or Alpheus djeddensis. The goby does not take part in the burrowing and the shrimp does all the excavation in a sandy or silty area of the seabed. The burrow has one or more openings, the positions of which are altered as the shrimp engages in its burrowing activities. A new entrance may be opened after the goby pokes its head through the substrate from inside.
|
|
Talbingo Dam is a major dam on the Tumut River, within the Snowy Mountains, approximately south of the village of Talbingo. The dam was constructed by Thiess Bros Pty Limited and, at the time, the project was the largest dam ever built in Australia. The dam is the largest and last of the sixteen dams completed as part of the Snowy Mountains Scheme. The dam wall comprising of rockfill with an upstream sloping silty clay core is high and is long.
|
|
At this stage the river is still flowing swiftly and carrying gravel from the mountains. After Opiki, it slows and has a lower gradient, meandering over the Manawatu Plains; its bed at this point is mud and silty sand. In its meandering and frequent shifting of course it has created oxbow lakes, lagoons, and swamps. Sediment deposited along its course has created levees, higher than the surrounding plain; when the river is in flood it overflows these and creates wetlands.
|
|
A savanna is a naturally occurring area that is open like a prairie with grasses and herbaceous shrubs dominating, but having a substantial canopy from trees. The canopy is less than 80% of the area, but more than 10%. Where the soils is sandy, the dominant trees are black oak and white oak. When the soil is predominately a silty loam, burr oak and other oaks are common. Savanna’s begin along the Tinley Moraine and southward onto the Valparaiso Moraine.
|
|
The Middle Devonian blastoid Hyperoblastus from the Milwaukee Formation; Wisconsin; lateral view of theca. Like crinoids, blastoids were high-level stalked suspension feeders (feeding mainly on planktonic organisms) that inhabited clear-to-silty, moderately agitated ocean waters from shelf to basin. The food gathering system of blastoids consisted of several types of ambulacra. Food entered the brachiolar ambulacra, was transferred to the side ambulacra through the brachiolar pit, then transferred to the main (median) ambulacra, and finally entered the mouth.
|
|
The mud whiting, Sillago lutea, is a species of coastal marine fish in the smelt-whiting family Sillaginidae. The mud whiting was first described in 1985 and is currently known from the north west coast of Australia and the Indian coast. As its name suggests, mud whiting prefer muddy or silty substrates, and are commonly found in association with the banana prawn. Due to this relationship, Australian prawn trawlers take large quantities of the species, but it is currently not marketed.
|
|
Weston Hills. The area around Spalding is strategically important for Britain's vegetable industry Spalding is located at the centre of a major region of flower and vegetable cultivation, due to the rich silty soil, which mainly comprises drained, recovered marshland or estuary. There are many garden centres and plant nurseries, as well as a thriving agricultural industry and various vegetable packing plants. The main vegetables are potatoes, peas, carrots, wheat, barley, oats, broccoli, spinach, lettuce, cabbage, kale and Brussels sprouts.
|
|
During the initial interrogations, he refused to testify, but soon began speaking. During the investigation, the bodies of 13 victims were found, one more was not possible to be located, since a railway was laid above the burial site. At least nine more victims of Tyurin, by his own admission, were drowned in the Utkina Zavod, however, the bottom of the reservoir was so silty that even divers could not find the bodies. As a result, Tyurin was accused of committing 14 murders.
|
|
The channel is navigable by large ships, only from the southeast, as far as the Douglas Bridge, approximately . Between the bridge and Juneau International Airport, approximately , it is navigable only by smaller craft and only at high tide. The channel is becoming increasingly unnavigable due to shallow water depths. The two principal causes for this are: # Isostatic rebound following the retreat of glacial ice sheets # Sedimentation and infilling of the Gastineau Channel by silty sediment produced by the Mendenhall Glacier and Mendenhall River.
|
|
Cephalopholis boenak is mainly a coastal species which is found on silty, dead and living coral reefs as deep as . It is a carnivore which preys mainly on other fishes and on crustaceans. The chocolate hind is a protogynous hermaphrodite, they undergo a sex change from females to males, although some are born as males. They occur in relatively small social groups which comprise a single male, one or two smaller females, and a variable number of sexually inactive individuals.
|
|
The Harbour is made up of Sandy Gravels, Sands, Muddy Sands, and towards the margins Silty Muds. High and low Salt marsh both exist within the harbour, the latter colonised by Puccinellia and other grasses. Spartina anglica does not exist in significant volume, with no sign that it was previously extensive. The sedimentation of the Harbour has not therefore been substantially affected in the way most other south coast estuaries have by the spread and die back of this species.
|
|
Baumea preissii is a flowering plant in the sedge family Cyperaceae, which is native to Western Australia. The robust grass-like plant is rhizomatous and perennial; it typically grows to a height of , and colonises easily. It blooms between July and December, producing purple-brown flowers. It is found in swamps and on the margins of lakes and creeks along coastal areas in the Wheatbelt, Peel, South West, Great Southern, and Goldfields-Esperance, where it grows in water-logged silty-sand soils.
|
|
Sandy Hook is an unincorporated community in Goochland County, Virginia, United States. Sandy Hook is located on U.S. Route 522 north-northwest of Goochland. Sandy Hook has a post office with ZIP code 23153.ZIP Code Lookup One version of the etymological history of the name "Sandy Hook" has it that at a prominent local bend on Route 522 (opposite what is now "Wood's Store", and probably before the road was surfaced), heavy rain would leave a silty, sandy residue on the road.
|
|
The Jeckenbach Subformation's deposits (mainly silty minerals), part of the Meisenheim Formation, which in turn belongs to the Glan Subgroup, are found mainly south of Abtweiler (around Castle Raumberg). This great subformation's lithostratigraphical division is based on several almost basinwide sandstone and lake sediment horizons. To be named here are the Meisenheim Bed, the Breitenheim Bed and the Jeckenbach Bed as well as the Hoof seams. Atzbach (1980) puts the thickness in this type region near Jeckenbach west of Meisenheim at 600 m.
|
|
Besides, there still are surface water, groundwater and thermal mineral water on the shore of the Hạ Long - Bái Tử Long Bays and other environmental resources. In terms of marine geology, this area is recorded as an especially coastal sedimentary environment. In the alkaline seawater environment, the chemical denudation process of calcium carbonate proceeds rapidly, creating wide, strangely shaped marine notches. The bottom surface sediments are various from clay mud to sand, however, silty mud and clay mud are dominated in distribution.
|
|
Distinctions in soil are used in assessing the soils that are to have structures built on them. Soils when wet retain water, and some expand in volume (smectite clay). The amount of expansion is related to the ability of the soil to take in water and its structural make-up (the type of minerals present: clay, silt, or sand). These tests are mainly used on clayey or silty soils since these are the soils that expand and shrink when the moisture content varies.
|
|
The Gai-As Formation as a whole displays an upward coarsening sequence which starts with distal shallow lacustrine shales. The occurrence of flaser bedding, oscillation ripples and hummocky cross-stratification in silty intercalations indicates that the sediment, surface must have been above the storm wave base. The remarkably high content of analcime (30 volume percent) in some layers may be indicative of contemporaneous volcanic activity. Early diagenetic formation of analcime from volcanic glass in an alkaline environment has been described.
|
|
The amber pen shell may reach in length with shell growth being extremely rapid after settlement (up to in length/day) and growth slowing down as shells get large and attain a refuge in size (at around ). The exposed valves of amber penshells are subject to frequent damage as they often show breaks and scars. While its half-buried position facilitates filtering water from above silty bottoms, it also increases exposure to predators. Octopuses are likely important predators of amber pen shells.
|
|
Beekeepers place prepared nesting materials to entice the females to stay close to the orchard or nearby forage. Good nesting material (reeds, paper tubes, wood trays, or "bee condos") are as important as having the proper mud available (silty/clayey, as well as correct moisture content to grab/pack the mud). A female might inspect several potential nests before settling in. Once she has found a preferred nesting cavity, she flies outside of the hole and does an in-flight dance.
|
|
The river carpsucker, like other suckers, is a bottom feeder and obtains its nutrients from algae, microcrustaceans, and other various tiny planktonic plants and animals found in silty substrates. The river carpsucker typically lives about two to four years, but may survive for up to 10 years. It begins to reproduce typically in late spring, and the female usually releases more than 100,000 eggs; it reaches sexual maturity around two or three years old. After releasing and fertilizing their eggs, all parental care is ended.
|
|
Salyer. The silty South Fork joins the river from below. The Trinity River begins deep in the Scott Mountains, in Trinity County, at the confluence of High Camp Creek and Chilcoot Creek. It flows south through a deep valley between the Trinity Mountains to the east and the Salmon Mountains/Trinity Alps to the west, picking up Coffee Creek, before entering Trinity Lake, a large reservoir created by the Trinity Dam. The East Fork and Stuart Fork of the Trinity River also flow into the reservoir.
|
|
They are shaley and silty towards the top. The sandstones sometime contain conglomeritic horizons composed of rounded, disc- shaped pebbles of Dox Sandstone and occasional pebbles of basalt lava. A lag deposit of gravel composed of white to yellowish, small pebble to cobble size chert gravel occurs locally at the base of the upper member. Typically, the sandstone sections are thin-to-medium bedded and exhibit planar tabular and trough cross-bedding, ripple marks, mudcracks, numerous soft-sediment deformation structures, and rare salt pseudomorphs.
|
|
This sequence is overlain by bluish-grey marls and black silty shales with conglomeratic intercalactions. Museo Virtual - Geositio Puerto Plata type section - SGN A second outcrop in Puerto Plata shows a less typical debris flow setting, with a varied sedimentological character. Museo Virtual - Geositio Puerto Plata - SGN ;Hermanas Mirabal The section of La Toca Formation in Hermanas Mirabal Province displays a thick series of matrix supported conglomerates. The clasts of these massively bedded conglomerates are characterized by two main lithology types; tuff and limestone.
|
|
Banklick Creek was once slightly deeper and more navigable than is the case today, and human village sites which date to the archaic period (some 8000 BC in some cases) are numerous along its length. A log cabin that was built by the region's earliest white settlers still stands near the midpoint of Banklick Creek. The creek is popular with both fossil and artifact seekers, and in 2001 a flint paleo spear point dating to c. 11,000 BC was discovered in a silty gravel outcropping, near Latonia.
|
|
Philae, Kalabsha, Wadi al-Sabua, Dakka, Derr and other sites were moved, with the temples of Abu Simbel receiving the most media attention. The temple of Amada was a difficult case, because of its small, beautifully painted reliefs. Chopping it into blocks, as was being done with the other temples, was not an option; the paintings would not have survived. Seeing that all seemed resigned to see the temple flooded by the silty waters of Lake Nasser, Christiane Desroches Noblecourt announced that France would save it.
|
|
Carex concinnoides near Mission Ridge, Chelan County Washington Carex concinnoides is a species of sedge known by the common name northwestern sedge. It is native to western North America from British Columbia to California, where it can be found in moist or dry habitat, often in woodland and forested slopes, on silty and clay soils. This sedge produces loose clumps of stems up to about 35 centimeters in maximum height from long rhizomes. The leaves are thick but narrow, sickle-shaped, and pale green in color.
|
|
Based on foraminifera data, it appears that the salinity of the lake fluctuated between hypersaline and freshwater; initially it was thought that it never became a freshwater lake. During the Wisconsin glaciation, lake waters were oligotrophic and reached temperatures of . Strong winds and the shallow depth of the lake prevented the lake waters from becoming statified and it has been inferred that Lake Estancia featured bottom currents. Silty water might have reached large distances from the shoreline, depositing its silt far into Lake Estancia.
|
|
Indiana is nationally ranked for agricultural production because of the highly productive Miami soils along with other prime farmland soils in the State. The Miami series consists of moderately well drained soils formed in as much as 18 inches (46 cm) of loess or silty material and in the underlying loamy till on till plains. They are very deep soils that are moderately deep to dense till. Permeability is moderate or moderately slow in the solum, and slow or very slow in the underlying dense till.
|
|
This formation varies between 200m to 800m with the top formation composed of dark grey, greenish grey clay, intercalated with beds of sandstone, and siltstone. The middle layer of the basin is composed of quartz sandstone intercalated with greyish black, firm claystone and a thick bed of dark grey clay intercalated with light coloured oil shale. The later of this basin is also locally fine grained and calcareous. The bottom layer has a composition of brownish grey sandstones intercalated with several beds of silty clay.
|
|
Unfortunately, channelization of and construction along Red River has resulted in lower portions of the site being covered by sediment and the remaining exposures being completely covered by colluvium and overgrown by vegetation. As a result, fossils can no longer be found at this site. The Cane River Site is a low road-side cut made doing the construction of Interstate Highway 49 near Natchitoches, Louisiana. It exposes several feet of 44.5 to 46.5 Ma glauconitic silty clay belonging to the Cane River Formation.
|
|
The second species is known from a single fossil that was discovered in silty medium brown Kamloops group shale in the McAbee Fossil Beds near Cache Creek, British Columbia. The McAbee Fossil Beds have been dated in 1981 to the early Eocene Ypresian stage. The genus and type species were first described, without illustration, by Samuel Scudder in 1878, who placed the genus in the family Panorpidae. A second fossil was recovered by a collector in 1907 and first illustrated in 1927 by Theodore Cockerell.
|
|
Gansus was discovered in the form of a single fossil foot in 1981. Five more well-preserved fossils were found in 2003-2004 in mudstone at the site of an ancient lake at Changma, Gansu; the geological stratum in which the fossils were found is the Xiagou Formation. Their bodies had settled in anoxic mud and were soon covered with further extremely fine silty sediments. Without oxygen, their remains resisted decay: these specimens preserved remains of flight feathers and traces of the webbing between their toes.
|
|
The use of these materials has become increasingly more common due to their ease of use which eliminates the need for transporting and laying stone drainage aggregate which is invariably more expensive than a synthetic drain and concrete liners. Over the past 30 years geotextile, PVC filters and HDPE filters have become the most commonly used soil filter media. They are cheap to produce and easy to lay, with factory controlled properties that ensure long term filtration performance even in fine silty soil conditions.
|
|
The difference in altitude and vegetation types gives rise to different soil types. From the field studies, soils of the lower belt to parts of the middle belt can be described as sandy-loam to reddish alluvial (ferralsol). The soils of the lower belt are highly exploited for plantation agriculture (oil palm and cocoa plantations) and to a lesser extend subsistence crops like plantain, cassava, cocoyam, banana and pepper. The upper belt has rich alluvial and silty-loam soils interspersed with very barren chalk and clay soils.
|
|
Wetaskiwin sits on what was formerly the coast of the large sea that covered much of Alberta millions of years ago. The northwest end of Wetaskiwin is characterized by hills with sandy soil (formerly sand dunes), while the southeast end of the city is very flat with more silty soil. The city lies at an elevation of . Coal Lake, a reservoir developed on the Battle River is located immediately east of the city, and other nearby waterways include Pipestone Creek, Bigstone Creek, Bittern Lake and Bearhills Lake.
|
|
It is native to the Mid West, Pilbara and Goldfields-Esperance regions of Western Australia as well as southern parts of the Northern Territory and northern parts of South Australia where it is often situated on flats or undulating plains and on rocky hills growing in red-brown loamy, silty loamy, sandy loamy or clay-loam soils although it also less frequently found in clay often over hardpan or in skeletal soils as a part of mixed Eucalyptus shrubland communities that usually have a cover of spinifex.
|
|
The mud whiting is known to inhabit two regions, the north west coast of Australia from Exmouth Gulf in Western Australia to the eastern Gulf of Carpentaria and the Arafura Sea, as well as the coasts of India and Sri Lanka. Mud whiting are commonly associated with the banana prawn, Penaeus merguiensis de Man in northern Australia, and inhabit most muddy or very silty substrates. Mud whiting occur in a range of depths, from 0 to 60 m. The species reaches sexual maturity at 10 cm.
|
|
Iceberg Lake Ridge, Glacier National Park Belt rocks make up the mountains around St. Mary Lake at Glacier National Park. Deposition took place in a broad trough extending southeast to the Big Snowy Mountains as well as to the southwest through Three Forks, Whitehall, the Highland Mountains, and Armstead. Regional low-grade metamorphism altered sandstone, carbonates and silty shale to quartzite, argillite and dolomite. Geologists divide the rocks into four units, from oldest to youngest the pre-Ravalli rocks, the Ravalli, the Piegan, and the Missoula groups.
|
|
Much of it is permanent marsh, but some parts dry out in early winter, and other parts become marshland only in years of great flood. Because the waters of the Tigris and Euphrates above their confluence are heavily silt-laden, irrigation and fairly frequent flooding deposit large quantities of silty loam in much of the delta area. Windborne silt contributes to the total deposit of sediments. It has been estimated that the delta plains are built up at the rate of nearly twenty centimeters in a century.
|
|
It is surrounded by mountains, notably Mount Rundle, Sulphur Mountain, Mount Norquay, and Cascade Mountain. The town is above Bow Falls near the confluence of the Bow River and Spray River. Soils are calcareous and usually imperfectly to poorly drained in their natural state with textures from very fine sandy loam to silty clay loam. W.D. Holland and G.M. Coen, Ed. Ecological (Biophysical) Land Classification of Banff and Jasper National Parks, 1983 The sun rises over Banff from a vantage point on the road to Mt. Norquay.
|
|
104 in 1913.Henri Gauthier, Le temple d'Amada (Cairo 1913) Between 1964 and 1975, the temple was moved from its original location to a new site "some 65 m higher and 2.5 km away from its original site". Chopping it into blocks, as was being done with the other temples, was not an option; the paintings would not have survived. Seeing that all seemed resigned to see the temple flooded by the silty waters of Lake Nasser, Christiane Desroches Noblecourt announced that France would save it.
|
|
Along the Leda and the Jümme the land consists of river marshes, which are formed from silty clays. In the transition area between the rivers and the geest are peaty marshes that consist mostly of clay less than 40 centimetres thick on peat soils. The central part of the area between the Leda and the Jümme now consists of fully cultivated fen (Niedermoor). North and east of this area, in the municipalities of Nortmoor, Filsum, Detern and Stickhausen podsol soils predominate, usually in wet locations.
|
|
Because of poor logging practices in the upstream watershed, the historically silty Salween has become many times as turbid as its natural state. A reservoir on the Salween would fill much faster than projected, reducing the overall lifespan of dam projects. One of the largest problems is also that the dams would not have much positive impact on the people that actually live in the Salween region. There have been many public outcries to damming the Salween, ranging from petitioning to large-scale protests.
|
|
Gillia altilis is usually found in freshwater stream environments. Its globose shell is adapted for inhabiting high-velocity lotic environments (rheophile animal), because it allows for a large, muscular foot that can suction to rocks. However, relatives of this species, with the same globose shell and large foot, are well adapted to living on silty substrates because the large foot prevents the snail from sinking. In fact, it is not uncommon for Gillia altilis to inhabit both stagnant waters in lakes and streams and rapidly moving waters.
|
|
This species is often found in association with the sea anemone Protanthea simplex in very sheltered deep water, usually on littoral bedrock, silty boulders and rock slopes in fiords and other areas with calm waters. They are often accompanied by the parchment worm Chaetopterus variopedatus, encrusting red algae and the polychaete worm Pomatoceros triqueter. Other members of the community may be the saddle oyster Pododesmus patelliformis and the fan worm Sabella pavonina. Scattered colonies of Alcyonium digitatum are occasionally present along with the hydroid Bougainvillia muscus.
|
|
The upper layers of soil are more recent alluvium. This recent layer is thickest near Soda Lake and thins out towards the mountains to the east and west. Throughout the valley the soil composition varies greatly and includes clay loams, silty clay loams, loams, sandy loams, and gravelly loams. The sandier soils tend to reside near the slopes of the valley and provide greater drainage while the soils with more clay are located on the valley floor near Soda Lake, and have much poorer drainage.
|
|
T. Stevenson, ed. The Sotheby's Wine Encyclopedia (4th Edition) pg 482 Dorling Kindersley 2005 The area takes its name from the "chalky" white soils of the region. However the soils themselves do not contain any chalk but rather are composed of a mixture of quartzite abundant volcanic ash, sand and silty loam. The volcanic was emitted into the area by Mount St. Helena over a course of centuries, creating vineyard soils that are not very fertile and are able to restrain vigor in the vines.
|
|
It found in swamps and on the margins of lakes and streams along coastal areas in the Mid West, Wheatbelt, Peel, South West, Great Southern and Goldfields- Esperance regions where it grows in damp silty-sandy soils. It is also found in Queensland, Victoria, New South Wales, South Australia, Tasmania and the Northern Territory. The upright foliage and spreading rhizomatous habit allow the plant to form large dense swards in wet areas. It can grow in nutrient poor soils in water up to a depth of around .
|
|
Many slaves were skilled blacksmiths, masons, and carpenters who were often contracted out. Cloth, shoes, and clothing were imported from Europe and from the Northeast U.S. The self-sufficiency of plantations and cheap slave labor hindered economic development of the South. Contemporary descriptions cite the lack of towns, commerce, and economic development. Besides the necessity of river transportation, the ground near the rivers and old river channels contained the best agricultural land, where the sandy and silty soil settled, increasing the height of the natural levees.
|
|
The only two recorded specimens of the small-eyed whiting were taken from a market in Taipei, Taiwan. No other records of the fish have been reported. The habitat of the species is also largely unknown, but the only specimens were taken alongside both Sillago sihama and Sillago parvisquamis which inhabit primarily sandy and silty substrates in major estuaries, thus indicating S. microps may as well. Nothing else is known of the biology or the contribution to local fisheries of the small-eyed whiting.
|
|
The Columbia Basin Ecological Province is mainly a hilly upland that slopes up from north to south and that is dissected by numerous dendritic-pattern drainages. This ecological region is further subdivided into the northern ancient lake basin and the southern silty uplands. Soils in the area typically consist Bakeoven-Morrow complex, Lickskillet stony loam, Lickskillet-Rock outcrop, Morrow silt loam, and Onyx silt loam. The Columbia Basin Ecological Province merges with the Blue Mountain Ecological Province close to an elevation of around 3,500 feet (1,067 m).
|
|
Her lower decks are largely clear of debris, although they can be very silty, and the many openings and exits in the deck provide easy entry and exit points. Coral growth on the Thunderbolt is extensive, although less than similar wrecks like the and . Bait fish, barracuda, mackerel, snapper, permit, pompano, jacks, and resident goliath grouper, are often seen on the wreck, as well as the occasional black grouper and reef sharks. The area around the ship is mostly barren sand with occasional conch and hogfish.
|
|
The mining facility and town existed in an abandoned state for over twenty years after the mine closed. In 1987, the buildings of the mine and town were demolished. Environmental cleanup began in 1996, with the objective being to contain contaminants at the site and limit exposure to persons who visit the area. Remediation activities included sealing mine openings, removing radioactive material from the dump, disposing of this contaminated material on the tailings, and capping the tailings piles with a layer of silty clay, followed by revegetation.
|
|
The basal beds grade into a thick succession of silty to fine-grained, and eventually medium- to coarse grained, sandstone. Sections of the uppermost part show various types of intercalations: silt- and sandstone layers grade laterally into sequences of interbedded shale and sandstone with occasional intercalations of stromatolitic layers, carbonate horizons with molluscs, bone beds of fish scales and white layers rich in authigenic feldspar. The shale frequently exhibits desiccation cracks, whereas root marks are abundant in sandstone. Halite crystal moulds have been found locally.
|
|
The Bonneterre is overlain by of dolomite, often sandy, silty or cherty, forming the Elvins Group and the Potosi and Eminence formations. Withdrawal of the seas resulted in another unconformity during the latest Cambrian and early Ordovician periods. Hydrothermal mineralizing fluids formed the rich lead ore deposits of the Lead Belt during this time. Outcrop of Roubidoux sandstone along a bluff in Douglas County, Missouri Sedimentation resumed in the Ordovician with the deposition of the Gunter sandstone, the Gasconade dolomite and the prominent Roubidoux sandstone and dolomite.
|
|
A survey by Royal Navy divers found that the bows and stern were reasonably intact, but a section of the port side had been blown out. The wreck was abandoned as a total loss. In 1944 sections of steel plating from the port side were removed for use in other ships, but the unexploded mines and 4-inch ammunition were not recovered until 1950. The wreck is a popular, if silty, site for scuba diving owing to its relative intactness and shallow location at .
|
|
All species primarily occupy sandy, silty or muddy substrates, often using seagrass or reef as cover. They commonly inhabit tidal flats, beach zones, broken bottoms and large areas of uniform substrate. Although the family is marine, many species inhabit estuarine environments, with some such as Sillaginopsis panijus also found in the upper reaches of the estuary. Each species often occupies a specific niche to avoid competition with co-occurring sillaginids, often inhabiting a specific substrate type, depth, or making use of surf zones and estuaries.
|
|
Much of it is permanent marsh, but some parts dry out in early winter, and other parts become marshland only in years of great flood. Because the waters of the Tigris and Euphrates above their confluence are heavily silt- laden, irrigation and fairly frequent flooding deposit large quantities of silty loam in much of the delta area. Windborne silt contributes to the total deposit of sediments. It has been estimated that the delta plains are built up at the rate of nearly twenty centimeters in a century.
|
|
During the Ice Age, a glacier forced water to build up in what are now the valleys that hold the Pott Beck and the River Burn. This created large lakes that deposited minerals such as limestone and chert. The river flows over several types of bedrock (limestone, sandstone, mudstone and shale) which is covered by gravel and silty clay which is a result of riverine alluvia. When tested in the 1990s, this alluvia was found to be the largest and coarsest of all sediment that was flowing out through the Humber basin.
|
|
Of note, the 'soft-sediment deformation' seen in this Shinumo Quartzite formation indicates significant earthquake and tectonic activity during its deposition. The Dox Formation consists of a heterogeneous mixture of light-tan to greenish brown, siliceous quartz sandstone; calcareous lithic and arkosic sandstone; dark-brown-to-green shale and mudstone; red mudstone, siltstone, and quartz sandstone; sandy argillite; micaceous mudstone; and red quartzose, silty sandstone. In ascending order, these sediments have been subdivided into the Escalante Creek, Solomon Temple, Comanche Point, and Ochoa Point Members. Stromatolites have been reported from the Comanche Point Member.
|
|
The Trafalgar Moraine is formed primarily of silty, clay- rich sand, and underpinned by shale bedrock, all of which hinder water absorption. Nonetheless, a few areas serve as surface water reservoirs, allowing for some groundwater regeneration, given the almost impermeable soils. The Trafalgar Moraine is approximately 20 km long, 30 m high and 4 km wide, extending from the Niagara Escarpment north of Nelson to Streetsville in an east-northeast trend; at the Oakville boundary, the trend shifts northeast. The moraine has impacted the flow of the eastern branch of the 16 Mile Creek.
|
|
He chose to build the South Pass Light on Gordon's Island, named after the New Orleans customs collector, Martin Gordon. It was Gordon who persuaded Lewis to abandon his original scheme of driving piles into the marshy ground to secure the foundation in favor of a floating foundation of a cross-hatched grid of squared timbers, a scheme that would ultimately prove fatal with the shifting silty ground below the foundation. Nonetheless, the first keeper, Henry Heistand, lit the lamps for the first time on 15 May 1832.Kraig Anderson, "South Pass, LA," LighthouseFriends.
|
|
For example, some sedimentary layering promotes the formation of soil such as a silty cover on bedrock, or a sandy cover on a clayey alluvium layer. In both of these cases, a friable surface material has been established by nonpedogenic instances. Other instances of sedimentary surface cementation, or fine interbedded sequences of clay and sand, could be considered to be not conducive to the formation of a soil. Nonuniform parent materials may be difficult to find in soils and paleosols, although deviations from normally found minerals could lend clues to the original parent material.
|
|
Mantanuska Glacier State Recreation Site is along the highway where Glacier Creek enters the river; King Mountain State Recreation Site is near Chickaloon, and Kepler - Bradley Lakes State Recreation Area is near Palmer. In addition to the glacier, named and unnamed streams that drain the Talkeetna and Chugach ranges feed into the river. These include Glacier, Hicks, Purinton, Caribou, and Coal creeks, and the Chickaloon and King rivers, and many others. The main stem is silty with glacial run-off from spring through fall but at lower flows beneath winter ice, it runs relatively clear.
|
|
Around forty producers tend the gravelly soil found on the left bank of the Dordogne River, on a geomorphic system of alluvial terraces. This terrace system is evidence that the Dordogne River sunk within the valley during the last Ice Age. Smallholdings, ranging from to around in area, only exist in the Vayres commune and the plateau of its neighbouring commune, Arveyres. The limits of this appellation area were defined in 1936, by the gravel, sandy- gravel, clay-gravel and silty-gravel soils found along the path of the Dordogne, because of their potential qualities.
|
|
This is concrete evidence that the site was not always submerged in prehistory. Further "Within the contact zone of the marine and dolomitized silty clay sediments, charcoal, bone, and early Archaic artifacts were found in abundance" (Arbuthnot 2002: 28). Evidence of human occupation levels further back-up the evidence that the site was not fully inundated throughout prehistory. By analyzing the organic remains and global paleoclimate data archaeologists and other scientists can determine very reasonable dates for when a site was not submerged and when it became fully inundated.
|
|
Organic remains are the decaying matter of a once living organism. In this context organic remains are very important in determining if and when an underwater archaeological site was above water. Evidence of terrestrial faunal and floral remains found in undisturbed contexts strongly indicate that a site was at one time not submerged. At the J&J; Hunt site within one of the test pits excavated, "[…] a fragmentary cranium and dentition of a juvenile mastodon was found atop a sedimentological layer consisting of dolomitized silty clay" (Arbuthnot 2002: 28; Faught 2004a).
|
|
Isle a la Cache is managed as an urban park and element of the Des Plaines River wildlife corridor. Birds sighted here include the belted kingfisher and the hooded merganser. Trees that grow on this silty, wet-footed island include the chinquapin oak and the black ash, although the ash trees of the Chicago area are, as of 2014, gravely threatened by the emerald ash beetle. The island features a network of short trails, officially 0.44 miles in length, that connect the island by bridge with the Centennial Trail/I&M; Canal Trail.
|
|
It largely consists of sands and sandstones with silts and clays in places. The lowermost unit is the Atherfield Clay Formation consisting of silty clays and clayey silts which are overlain by the fine to coarse-grained sandstones of the Hythe Formation which is glauconitic in part and which also contains Fuller's earth and clay units. Above this is the Sandgate Formation at the base of which is the Easebourne Member. Overlying divisions of the formation include the Fittleworth, Rogate, Selham Ironshot Sands, Pulborough Sandrock and Marehill Clay members.
|
|
However, Bangalore sometimes does face water shortages, especially during summer- more so in the years of low rainfall. A random sampling study of the air quality index (AQI) of twenty stations within the city indicated scores that ranged from 76 to 314, suggesting heavy to severe air pollution around areas of traffic concentration. Bangalore has a handful of freshwater lakes and water tanks, the largest of which are Madivala tank, Hebbal lake, Ulsoor lake, Yediyur Lake and Sankey Tank. Groundwater occurs in silty to sandy layers of the alluvial sediments.
|
|
These deposits are usually limestone that was formed by very silty sediments, which makes it very soft (compared with some limestone, which is almost cement). The inside of a fossil crinoid usually consists of calcite crystals, because their skeletons were made of calcite. To be certain, one can look at the crystals under a microscope: if they are all in the shape of a rhombus, then they are calcite. Sometimes a crinoid is found that has been split in half, and specimens of this type are used in making jewelry pieces.
|
|
Topographical map of the Chew Valley The western end of the area (around Nempnett Thrubwell) consists of the Harptree Beds which incorporate silicified clay, shale and Lias Limestone. Clifton Down Limestone, which includes calcite and dolomitic mudstones of the Carboniferous period, is found in the adjoining central band and dolomitic conglomerate of the Triassic period. There are two main soil types, both generally well-drained. The mudstones around the lakes give rise to fertile silty clay soils that are a dull dusky red colour because of their high iron content.
|
|
The Platte River valley provided an easily passable wagon corridor; it sloped gradually up in height as it went almost due west from the Missouri. The Platte route had access to water, grass, buffalo and buffalo 'chips,' which the Indians and emigrants used as fuel for fires.Mattes, Merrill J.' "The Great Platte River Road"; Bison Books; 1987; Long Native American use had created trails on both sides of the muddy, about wide and shallow Platte River. The Platte's water was silty and bad tasting, but it was usable if no other water was available.
|
|
Lunules reduce lift by interfering with attachment of flow or by bleeding off pressure from the under surface. Excess pressure on the oral surface of lunulate sand dollars is relieved by flow along pressure drainage channels which lead from the central region of the disc into the lunules and ambital notches. It is also hypothesized that lunules shorten the food path of sand dollars, however this is not fully supported by observation. West African Sand Dollars also have small spines that help them sieve food particles from sandy or silty sediments.
|
|
The Bien Dong Formation thickness varies from a few meters to 200m. In the Quaternary layer, moving from the bottom to the middle to the top, the Bien Dong Formation is composed of angular to round quartz sand which gradually changes to silty clay in the middle section to quartz sand imbedded with shell fragments at the top of the layer. The Lower Pliocene layer has a composition of siltstones, friable claystones, and grey calcareous clays intercalated with white or light yellow quartz sandstone. This layer is also rich in carbonate and contains glauconite.
|
|
The lower member concludes with a sequence of dark grey laminated marls incorporating conodont fossils and silty quartz grains. The middle member of the Xiaowa Formation is by far the thickest unit and includes thick-bedded grey limestone and marl layers interbedding with each other. Sediment deformation is characteristic of layers in this member, while fossils are represented mainly by occasional bivalves and ammonoids. The middle member represents a deep-water environment influenced by tectonic events which disturb sediment layers and create distant turbidites that periodically supply increased clastic material.
|
|
S. ciliata is most commonly called the 'sand whiting' in reference to its preference for sandy substrates compared to some members of the genus which prefer muddy, silty, or grassy substrates. Other common names include the 'blue-nose whiting' in reference to the colour of the nose in fish of larger sizes, and 'summer whiting', a name often applied to S. analis as well. This name is applied to these species as they move from deeper offshore waters into shallow beach and estuarine waters in summer, where they become a target for recreational fishers.
|
|
By 1966, 35 miles demonstrated a drop of 1 feet, 3 feet elevation drop in 15 mile stretch, 5 foot decrease in a 5-mile portion, and 2 feet of the canal demonstrated a drop of 6 feet. Land subsidence in the region is due to constant over-drafting of underground water. Another key factor is due to the San Joaquin Valley's geomorphological structure, having young continental, unconsolidated sandy-silty-clayish soils, resting on old unconsolidated marine beds. Impacts of the land subsidence lead to a decrease between bridges and water level surface.
|
|
Below the Lake Orekhov Zaton on the high right bank is a natural species platform, from where the panorama of the village of Kulevatovo, the floodplain of the Tsna River, the mouth of the Chelnovoi River comes off. The fourth dam is behind the village of Mamontovo, the fifth - in Morshansk. Below Morshansk, Tsna becomes wider, the current is faster, beaches with small, sometimes silty, sand appear. The beaches are mainly meadow, only near Mutasievo on the right bank of the wedge is the forest to which the creek leads.
|
|
Washington DC Other species are found on muddy or silty bottoms of continental slopes. In October 2008, a UK-Japan team discovered a shoal of Pseudoliparis amblystomopsis snailfish at a depth of approximately in the Japan Trench. These were, at the time, the deepest living fish ever recorded on film. The record was surpassed by a snailfish that was filmed at a depth of in December 2014 in the Mariana Trench, and extended in May 2017 when another was filmed at a depth of in the Mariana Trench.
|
|
The eastern part of the department is part of the Pays de France, an area of fertile plain traditionally used for agriculture (particularly cereals and sugar beet) based on its fine silty soils. This part is progressively diminishing in size as Paris expands. Part of Charles de Gaulle Airport falls in this eastern region, while other parts are in the departments of Seine-et-Marne and Seine-Saint-Denis. The southernmost region of the department forms part of the Seine Valley and occupies the whole of the small Vallée de Montmorency.
|
|
The goby and shrimp share the same extensive burrow which the shrimp excavates in sandy or silty areas of the seabed. It has one or more openings, the positions of which are constantly changing as the shrimp engages in burrowing activities. During the day the goby rests on the burrow floor with its head by the opening or may emerge further. It feeds by picking small invertebrates out of the substrate that has been disturbed by the shrimp or by taking mouthfuls of sediment and extracting edible organisms and detritus.
|
|
The Thai whiting, Sillago intermedius, is a species of coastal marine fish of the smelt-whiting family Sillaginidae. The Thai whiting ranges from the west coast of India to the Gulf of Thailand in the east, inhabiting silty substrates in shallow waters. First identified in 1977 from a specimen found in a fish market, the species has had little research performed on its biology, and is frequently misidentified as Sillago sihama or Sillago maculata Thai whiting are commonly caught by fishermen throughout their range and are marketed fresh locally.
|
|
The Gap itself forms a sequence that continues offshore to the edge of the Sahul Shelf. Sydney features two major soils; sandy soils (such as red, brown and yellow podsols, grey and brown tenosols, lithosols, kandosols and kurosols) which originate from the Hawkesbury sandstone and have low fertility, and clay soils (which are from shales and volcanic rocks), though some soils may be a mixture of the aforementioned soils (such as sandy clay loams and silty clay loam).Gray, J.M. & Murphy, B.W. (2002), Predicting Soil Distribution, Joint Dept. of Land & Water Conservation (DLWC) & Aust.
|
|
The Kasilof River ( ) or Ggasilatnu in the Dena'ina language is a river on the western Kenai Peninsula in southern Alaska. The name is an anglicization of Reka Kasilova, the name given to the river by early Russian settlers in the area. It begins at Tustumena Lake and flows northwest to Cook Inlet near Kasilof. The upper section of the river is very swift, with several sections considered Class II whitewater, and underwater hazards are difficult to detect, due to the silty nature of the glacial runoff that comprises most of the river.
|
|
The historical range of the crystal darter included the Mississippi River basin, from Wisconsin and Indiana, southwards to southeastern Oklahoma, northern Louisiana, southern Mississippi, the Mobile Basin, Pascagoula, Pearl River, Florida, Alabama, and Mississippi. It is now absent from much of this range and is rare in Wisconsin, Minnesota, Iowa, and Missouri. It is found in swift-flowing streams with clear or slightly turbid water and moderately swift riffles, on small or medium-sized rivers with beds of sand or gravel. It is not found on silty bottoms or areas with vegetation.
|
|
The surviving arches are a mix of Norman-style semi-circles and the pointed Gothic style, though it is unknown whether the mix was part of the original design or the result of later repairs.Brierley, pp. 137–138. In the later 13th century, silty deposits had built up on the Exeter side of the bridge, allowing the land to be reclaimed for two buildings which backed onto the river and fronted onto what is now Frog Street. Archaeological evidence suggests that one of the two was possibly a leather tannery.
|
|
Bangalore has a handful of freshwater lakes and water tanks, the largest of which are Madivala tank, Hebbal lake, Ulsoor lake and Sankey Tank. Groundwater occurs in silty to sandy layers of the alluvial sediments. The Peninsular Gneissic Complex (PGC) is the most dominant rock unit in the area and includes granites, gneisses and migmatites, while the soils of Bangalore consist of red laterite and red, fine loamy to clayey soils. Vegetation in the city is primarily in the form of large deciduous canopy and minority coconut trees.
|
|
Valenciennea wardii, Ward's sleeper,Ward's sleeper goby, is a species of goby native to the Indian Ocean and the western Pacific Ocean in bays, reefs and lagoons at depths of from . It can be found on sandy or silty substrates. This species can reach a length of SL. It can also be found in the aquarium trade. The specific name honours the United Kingdom diplomat Swinburne Ward (1830-1897) who was Her Majesty's Civil Commissioner for the Seychelles, although this species was described from specimens collected off Zanzibar.
|
|
Fruit set and matured when flowers were hand pollinated from another tree several hundred metres away. Both the trees growing outside in the Helensville location are in moderate shade, one in a moderately well drained silty sand-clay loam, another in a well-drained, leached sandy loam. Air temperatures do not fall much below about 5 °C, and daytime air temperatures rarely exceed 27 °C in summer. The Kew trees are growing in "slightly acidic, open, peat free, multipurpose substrate compost with added Perlite and fine bark" according to Vanderplank.
|
|
The Jenkins' whipray is rather common, with a wide but patchy distributed in the tropical waters of the Indo-Pacific. It occurs off southeastern Africa (including Madagascar), the Socotra Islands near Yemen, South and Southeast Asia (including the Philippines), New Guinea, and northern Australia from Ningaloo Reef to the Gulf of Carpentaria. This bottom-dwelling species is generally found close to shore in water under deep, though it has been recorded as far down as off northwestern Australia. It prefers sandy or silty bottoms, often in lagoons, and has been known to enter brackish water.
|
|
Smelt-whitings are primarily inshore marine fishes inhabiting stretches of coastal waters, although a few species move offshore in their adult stages to deep sand banks or reefs to a maximum known depth of 180 m. All species primarily occupy sandy, silty or muddy substrates, often using seagrass or reef as cover. They commonly inhabit tidal flats, beach zones, broken bottoms and large areas of uniform substrate. Although the family is marine, many species inhabit estuarine environments, with some such as Sillaginopsis panijus also found in the upper reaches of the estuary.
|
|
Quintus Didius was a Roman governor of the province Syria (31 BC to 29 BC). Octavian, the later Emperor Augustus, won the decisive Battle of Actium against Mark Antony and Cleopatra VII. Then – at the end of 31 BC – he sent Didius as governor to Syria. If Octavian conquered Egypt, Cleopatra wanted to escape to India with a fleet, which she had pulled through a silty canal into the Red Sea, but Didius induced Malchos, the king of the Nabataeans, to stop her plan by setting her ships on fire.
|
|
The basin comprises semi-arid valleys in the rain shadow north of the Himalaya, densely forested mountains south of the highest ranges, the scrubby Shiwalik foothills and the fertile Gangetic Plains. Central highlands south of the Gangetic Plain have plateaus, hills and mountains intersected by valleys and river plains. The important soil types found in the basin are sand, loam, clay and their combinations such as sandy loam, silty clay etc. The annual surface water potential of the basin has been assessed as 525 km³ in India, out of which 250 km³ is utilisable water.
|
|
Females will sometimes split their clutch into multiple areas, or deposit their clutch communally with other pairs in a single area. The relatively large amount of pigmentation in eggs and tadpoles is thought to help expedite development, and tadpoles will congregate in the shallowest, warmest margins of ponds during the day. At nighttime tadpoles settle down into the silty detritus where they are more insulated from the cold nighttime temperatures. This often gives their pools the appearance of "golf ball" texture, because tadpoles leave divots in the silt (see picture of breeding pool).
|
|
The Pacific chupare or Pacific whiptail stingray, Styracura pacifica, is a species of stingray in the family Potamotrygonidae. It has been reported off the Pacific coast of Central America from Oaxaca, Mexico to Costa Rica, and also around the Galapagos Islands. It is usually found in shallow water on soft silty or muddy flats; it is unknown whether this species is tolerant of low salinity like the related chupare stingray (S. schmardae). Leonard Compagno doubted the taxonomic validity of this species in his 1999 Checklist of Living Elasmobranchs.
|
|
Kudat formation is originated from deep marine environment. The peninsula is geologically high flanked by deep structural depressions with the northern terrane comprises thick-bedded sandstone with interbeds of silty mudstone and contains calcareous nannofossil of Early Eocene to Middle Eocene that were deposited in deep-water setting in contrast to shallow-marine environments declared in previously published material. In the central area of the peninsula in Sikuati located an oil seep in a tidal mangrove swamp surrounded by an adjacent green area of primary and secondary vegetation.
|
|
Lyell's scientific contributions included a pioneering explanation of climate change, in which shifting boundaries between oceans and continents could be used to explain long-term variations in temperature and rainfall. Lyell also gave influential explanations of earthquakes and developed the theory of gradual "backed up-building" of volcanoes. In stratigraphy his division of the Tertiary period into the Pliocene, Miocene, and Eocene was highly influential. He incorrectly conjectured that icebergs may be the impetus behind the transport of glacial erratics, and that silty loess deposits might have settled out of flood waters.
|
|
Rocky ridge of Jebel Fuwayrit overlooking a twilight vista Nestled in northeast Qatar, Fuwayrit is located 91 km north of the capital Doha, 25 km away from Ar Ru'ays, 51 km away from Zubarah, 60 km from Al Khor City, and 106 km from Al Wakrah. The original town was established on a short, tapered headland with a soil texture comprising mainly silty sand. On the coastline to the east, sandspits separated the town from the sea. More inland, a sabkha system has developed and is characterized by grassy rawdas.
|
|
The geology of the East Tasman Plateau includes early hard continental type rocks, volcanic rocks which are part of sea mounts, and marine sediments deposited since it was below sea level. The earliest continental East Tasman Plateau rocks that have been brought to the surface of the sea are of Neoproterozoic age, and include gneiss, rhyolite, quartzite, sandstone, ferricrete, and metamorphosed sediments. The eastern edge of the plateau facing the Tasman Basin is steep, dropping more than and composed of granite. Sediments on the East Tasman Plateau start with silty clay from Maastrichtian to Eocene.
|
|
Without antecedent rainfall, high intensity and short duration rains triggered debris flows and shallow slides developed in colluvium and weathered rocks. A rainfall threshold of around 190 mm in 24 h initiated failures whereas more than 300 mm in 24-48 h were needed to cause widespread shallow landsliding. With antecedent rain, moderate intensity precipitation of at least 40 mm in 24 h reactivated mudslides and both rotational and translational slides affecting clayey and silty-clayey formations. In this case, several weeks and 200 mm of precipitation were needed to cause landslide reactivation.
|
|
This is a member of the flora in hardwood forests with sandy or silty substrates over limestone rock. The forests are dominated by magnolia (Magnolia grandiflora), black gum (Nyssa sylvatica), cabbage palm (Sabal palmetto), pignut hickory (Carya glabra), laurel oak (Quercus laurifolia), live oak (Quercus virginiana), water oak (Quercus nigra), winged elm (Ulmus alata), sweetgum (Liquidambar styraciflua), sugarberry (Celtis laevigata). Other plants in the understory include hornbeam (Carpinus caroliniana), dwarf palmetto (Sabal minor), American beautyberry (Callicarpa americana), and yaupon holly (Ilex vomitoria). The main threat to this rare plant is habitat destruction.
|
|
Ring Creek: Beginning at the head of the Diamond Glacier within Garibaldi Park, Ring Creek flows south then west to its confluence with the Mamquam about 4.2 km above its mouth. The creek is very swift, cold, silty and fast flowing. 3\. Mashiter Creek: Flowing west then east from its source on Columnar Peak, Mashiter Creek is the Mamquams final tributary, entering the Mamquam about 2.7 km above its mouth near Garibaldi Estates. It is popular with kayakers, as it has several rapids and waterfalls along its course.
|
|
They are usually installed with orthogonal axes to the slope surface and therefore, at first, approximately orthogonal to the surface of the creep. Sometimes anchorage problems occur, as in the case of silty-clayey ground. Where there is water or the anchors are embedded in a clayey sub- layer, the adherence of the anchor to the ground must be confirmed. The surface contained within the grid of the beam frame should also be protected, using geofabrics, in order to prevent erosion from removing the ground underlying the beam frame.
|
|
The Nile river flows into South Sudan just south of Nimule, where it is known as the Bahr al Jabal ("Mountain River"). Just south of the town it has the confluence with the Achwa River. The Bahr al Ghazal, itself long, joins the Bahr al Jabal at a small lagoon called Lake No, after which the Nile becomes known as the Bahr al Abyad, or the White Nile, from the whitish clay suspended in its waters. When the Nile floods it leaves a rich silty deposit which fertilizes the soil.
|
|
A geological north–south cross-section through the Wealden dome some east of Ashdown Forest The underlying geology of Ashdown Forest is mostly sandstone, predominantly the Lower Cretaceous Ashdown Formation. This forms a layer varying from to thick, consists of fine-grained, silty interbedded sandstones and siltstones with subordinate amounts of shale and mudstone. It is the oldest Cretaceous geological formation that crops out in the Weald.There are only three older outcrops, which are Jurassic Purbeck Beds, a thin limestone, are at Heathfield, Brightling and Mountfield, all in east Sussex.
|
|
The Sassenach Formation is a stratigraphic unit of Late Devonian (early Famennian) age. It is present on the western edge of the Western Canada Sedimentary Basin in the Rocky Mountains and foothills of Alberta. It consists primarily of mudstone, siltstone, and silty carbonate rocks, and was named for Mount Sassenach in Jasper National Park by D.J. McLaren and E.W. Mountjoy in 1962. The Sassenach Formation was deposited near the beginning of the Fammenian stage of the Devonian, following the Frasnian-Fammenian extinction event.Geldsetzer, H.H.J., Goodfellow, W.D., McLaren, D.J. and Orchard, M.J. 1987.
|
|
The bottom of Tampa Bay is silty and sandy, with an average water depth of only about ."Tampa Bay Estuary Program" , Official Website The relatively shallow water and tidal mud flats allow for large sea grass beds, and along with the surrounding mangrove-dominated wetlands. the bay provides habitat for a wide variety of wildlife. More than 200 species of fish are found in the waters of the bay, along with bottlenose dolphins and manatees, plus many types of marine invertebrates including oysters, scallops, clams, shrimp and crab.
|
|
The trumpeter whiting is endemic to Australia, inhabiting the eastern seaboard from Narooma in New South Wales up to Lizard Island in Queensland. Fossil otoliths found in New Zealand indicate the trumpeter whiting or one of its closely related species was present in New Zealand until sometime in the late Pleistocene. The species prefers silty and muddy substrates in the deeper water of bays, but also inhabits deep sandy areas, with a study by Burchmore et al. suggesting a seasonal move between these two substrates in Botany Bay, New South Wales.
|
|
The northern river shark has been reported from King Sound, the Ord River, and Doctors Creek near Derby, Western Australia, the Adelaide and Alligator Rivers in Australia's Northern Territory, and the Daru region and possibly the Fly River in Papua New Guinea. It inhabits large rivers, estuaries, and coastal bays, all of which are characterized by high turbidity, silty or muddy bottoms, and large tides. Young and juvenile sharks are found in fresh, brackish, and salt water (salinity ranging from 2 to 36 ppt), whereas adults have only been found in marine environments.
|
|
Artifacts are found, typically redeposited, deflated, or both, in Late Pleistocene to early Holocene gravelly mud, muddy gravel, clayey sand, and silty sand. These sediments are often cemented into either concretionary masses or beds by calcrete. Ridges typically consist of deeply weathered bedrock representing truncated Cenozoic paleosols that formed under tropical environments. The Pleistocene to Middle Holocene sediments occur along wadis as thin, meter- to less than meter-thick accumulations in the interior annular depressions to thick accumulations along the wadis in the outermost annular depression of the Richat Structure.
|
|
Geology and Geoarchaeology of the Black Sea Region: Beyond the Flood Hypothesis The Neoeuxinian transgression began with an inflow of waters from the Caspian Sea. Neoeuxinian deposits are found in the Black Sea below -20 m water depth in three layers. The upper layers correspond with the peak of the Khvalinian transgression, on the shelf shallow-water sands and coquina mixed with silty sands and brackish-water fauna, and inside the Black Sea Depression hydrotroilite silts. The middle layers on the shelf are sands with brackish-water mollusc shells.
|
|
Coed Cochion Quarry SSSI is a very small quarry of located approximately south of Llangynog and north of Llanybri, north-east of the Taf Estuary. The site is a rare example in the world of Precambrian fossil records - greater than 0.5 billion years old - found in the ashy siltstone sedimentary rock. A number of fossils of medusoid creatures - visually like, but maybe not in fact contemporary jellyfish - are present, as are feeding trails of other creatures. The evidence is that the site was once a sandy, silty shoreline in which soft-bodied fauna became buried.
|
|
The belted sand fish is found silty waters where there is a substrate of mixed rubble and sand, often near jetties, rocky outcrops and artificial reefs. It can be found from the water's edge down to . It is a predatory species, the smaller fish, less than in total length, eat small crustaceans such as amphipods, gammarids and shrimp while the larger fish also ate amphipods but preyed on crabs, fishes and shrimp too. They are solitary fish which hunt close to the substrate, typically as the sun goes down.
|
|
Charybdis natator is a benthic species found in the inter-tidal zone and in the sub -tidal zone down to a depth of 60m and over a variety of substrates, including sandy or silty bottoms, rocky and coral reefs and beds of weed. It prefers to hide under rocks or stones. It is uncommon throughout its range, normally making uo less than 2% of the numbers of crabs sampled. In the Red Sea females with eggs have been found throughout the year, although there is a peak between May and September.
|
|
The main rock types are sandstone and limestone, and the soil is composed almost exclusively of quartz sand grains and clay minerals (illite). Previous strength studies performed on course-grained sandstone make it easy to see why the landslide was triggered. Triaxial compression testing done for dry silty sandstone show cohesive strength integrity to 18.7 MPa, meaning that the rock will not fracture until these stress conditions are reached. For a wet sample, similar to the conditions in Thistle, the cohesive strength integrity is reduced to 15.9 MPa.
|
|
These strata are all well above the present sea level. The Cederberg Formation includes dark grey siltstone and silty sandstones, and is darker than the overlying Goudini Formation which is light brown to light grey quartzitic sandstone, with interbedded reddish brown siltstone and shale. The Goudini formation is more feldspathic and finer grained than the Skurweberg Formation, which is characterised by fairly thick bedded medium to coarse grained, light grey, slightly feldspathic quartzose sandstone. The Rietvlei Formation consists of alternating horizons of light grey quartzose and feldspathic sandstone, siltstone and shale.
|
|
The Mabini protected area is situated in the coastal villages of Cuambog, San Antonio, Pindasan, Cadunan and Tagnanan in the northeastern side of Davao Gulf, some 80 kilometers east of the regional capital Davao City. Its coast is characterized as generally flat and covered by San Miguel silty clay loam. It is lined by a good stand of mangrove forest, particularly along the shores of San Antonio and Pindasan. It is crossed by 9 rivers and creeks which drain into the Davao Gulf, including the Lapinigan, Tagbalawlaw and Pindasan rivers.
|
|
The Mukurumudzi Dam is a 24m high homogeneous earthfill dam, with a low permeability central core and cut-off key and grout curtain, to limit seepage under the dam. The outlet works comprise a reinforced concrete intake tower and a reinforced concrete draw-off culvert and associated pipe work. The dam embankment consists of of silty-sand originating from the local area. Due to a lack of suitable clay materials in the area, an impermeable central bentonite- cement-soil cut-off membrane was constructed successively with the embankment.
|
|
The chalky buttercup has a symbiotic relationship with certain bacteria that live in its gills. These can oxidise methane and hydrogen sulphide, both of which are found in the low-oxygen, silty sand and mud in which this mollusc burrows. The chalky buttercup uses the energy produced by the bacteria and this enables it to live in an environment that would otherwise be too low in food particles. A similar mutually beneficial arrangement is found among deep-water clams which harbour bacteria that flourish beside the thermal vents where the molluscs live.
|
|
Head of goyle close to source of River SidWeir on River Sid at SidmouthThe River Sid is a minor river in East Devon. It flows for southwards from a source in Crowpits Covert (OSGB36 Grid reference SY138963) at a height of 206 metres above sea level.Sign erected at source by Sid Vale Association, 1997 The source is at the head of a goyle or small ravine. The underlying geology is impermeable silty mudstones and sandstones of the Triassic Keuper marl, overlain with permeable Greensand and clay-with-flints.
|
|
The oldest fossil tiger beetle yet found, Cretotetracha grandis, comes from the Yixian Formation in Inner Mongolia, China, and dates to the early Cretaceous Period, 125 million years ago. Most fossils found are grey or yellow silty mudstone. Traits that identify Cretotetracha as Cicindelinae include long mandibles shaped like sickles, simple teeth arranged along the mandible's inner surface, antennae that attach to the head between the base of the mandibles and the eye. The left mandible is approximately 3.3 mm and the right mandible is approximately 4.2mm long.
|
|
Vilat et al. The eggs were found in the lower portion of the Lower Red Garumnian, with local facies comprising calcareous silty mudstones, very fine to fine- grained sand bodies, and medium to coarse-grained sandstones. The rocks, in a thick interval,Vilat et al., 2010, p.3 are interpreted as sedimentary deposits of a fluvial environment located some distance away from an active stream channel.Vilat et al., 2010, p.2 Most eggs exposed at the Pinyes locality were incompletely preserved because of recent erosion; however, excavation occasionally revealed relatively intact specimens in the subsurface.
|
|
The deposit in which the bones were found was a silty claystone. This was formed from sediments deposited during what seems to have been a rather cool phase of the Late Cretaceous:Though still much warmer than today: see Cretaceous for contemporary climate. sea levels of the Western Interior Seaway at least were apparently very low for Mesozoic standards, though this may also have been due to strong tectonic uplift in the Cordilleran Overthrust Belt. The location was inland, with the Western Interior Seaway's coast at least 350 km (220 miles) away.
|
|
This seaweed has a wide distribution in the northeastern Atlantic Ocean, the Mediterranean Sea, the southern Atlantic Ocean, the Indian Ocean and the Pacific Ocean. The British Isles is its most northerly limit in the Atlantic Ocean, and it occurs on the south coast of Ireland, in Pembrokeshire and on the south coast of England. It grows in pools in the littoral zone and in the shallow infralittoral zone. It typically grows where there are sandy, clayey or silty sediments in pools beneath receding mudstone and sandstone cliffs.
|
|
Corymbia polycarpa is found in Western Australia, the Northern Territory, Queensland and northwestern New South Wales. The species is quite common between Broome and Derby in Western Australia through the Kimberley region of Western Australia extending east over the Top End of the Northern Territory including nearby islands and across the Gulf of Carpentaria and southern Cape York Peninsula in Queensland. It is found near watercourses, in depressions or on floodplains growing in sandy or silty alluvium and less commonly in cracking clays and in skeletal sandstone or lateritic soils.
|
|
The Lower Platte Alluvial Plain is an extension of the broad Platte River Valley (27g) to the west; however, this region is within the Western Corn Belt Plains and contains a combination of vegetation, soils, and climate more similar to other areas in 47. Silty, loamy, and sandy soils are formed from alluvium, though not as sandy as the Platte River Valley (27g) to the west. Land use is mainly cropland with areas of irrigated agriculture. Tallgrass prairie, wet meadows, and scattered riparian forests are the potential natural vegetation of the area, with forests generally denser and older than in region 27g.
|
|
The Western Loess Hills ecoregion extends south from Iowa and covers only a small area in northwestern Missouri. The deep loess-dominated hills have greater relief and a higher drainage density than the Steeply Rolling Loess Prairies (47e) to the east. The more irregular topography and erosive, silty soils contribute to a mixed land use with less cropland and more pasture and woodland than neighboring regions. The flora of this region is mixed, with shortgrass and mixed-grass prairie and rare xeric species on south and west-facing slopes, and bur-oak woodland and tallgrass prairie on cooler, moister slopes.
|
|
The amount of sediment found in glacial lakes varies from four to six meters in depth, and has a general stratigraphic sequence of; organic muds, glacial clays, silty clays, and sands based on time of formation. Over time the glacial lake sediments are subjected to change. As seen in the English Lake District, the layers of the sediments at the bottom of the lakes contain evidence of the rate of erosion. The elemental make up of the sediments are not associated with the lakes themselves, but by the migration of the elements within the soil, such as iron and manganese.
|
|
Close-up of the Rincon Shale in a road cut, showing weathered, highly fractured surface. The Rincon Formation is massive to poorly bedded, and consists of predominantly argillaceous to silty shale and mudstone, with occasional dolomite. Two layers of siliceous shale are found in the middle of the unit, and they outcrop noticeably in the region west of Goleta.Minor, S.A., Kellogg, K.S., Stanley, R.G., Gurrola, L.D., Keller, E.A., and Brandt, T.R., 2009, Geologic Map of the Santa Barbara Coastal Plain Area, Santa Barbara County, California: U.S. Geological Survey Scientific Investigations Map 3001, scale 1:25,000, 1 sheet, pamphlet, 38 p.
|
|
Siderastrea radians is common in tropical parts of the western Atlantic Ocean at depths of less than but is most common in under of water. Its range extends from Bermuda, the Bahamas, Florida and the Caribbean Sea south to Brazil and it also occurs in the eastern Atlantic off the coast of Africa. It is found on rocks in various reef habitats and can tolerate silty environments and tide pools. It is an adaptable species and in the Indian River Lagoon it has been found to tolerate temperatures varying between and and a wide range of salinities.
|
|
Thermic refers to an average annual soil temperature between 15 and 22 degrees Celsius (59 to 72 degrees Fahrenheit) and differs more than 5 degrees Celsius (9 °F) between winter and summer at 50 cm (20 inches) below the surface. Natchez soils are on strongly sloping to very steep hillsides in the highly dissected parts of the bluff hills that border the Mississippi Delta floodplains. They formed in silty loess material that ranges from strongly acid to neutral in the upper part and neutral to slightly alkaline in lower parts. Average annual precipitation is 52 inches.
|
|
The Cozy Dell is a gray to dark gray argillaceous to silty shale that weathers to brown and olive. It contains minor sandstone beds at some localities, and some conglomerate at others, most significantly west of San Marcos Pass. When exposed to surface conditions, it breaks down quickly to form a clay-rich soil that supports dense chaparral growth. Because the Cozy Dell is layered between the highly resistant Matilija and Coldwater sandstones, and turned up on end through most of its extent, it erodes to create passes and saddles between peaks and ridges of the adjacent units.
|
|
The Blantyre Sandstone is the continuation of channelization into the Jurassic. The formation is not easy to observe at a close scale, however by using Figure 2 above and knowledge of the Warang Sandstone an accurate description can be made. The channels are well preserved by coarse grained infill material, these are marked by parting lineations in the lower beds, and load structures in finely interbedded silty layers. Another feature that occurs within these are mudclasts that due to modern weathering have been removed to the point of having, what appear as, large gouges in the rock face.
|
|
Rhabdus rectius, also known as a straight tusk shell, is a species of scaphopod, a small marine mollusc native to the coast of central California whose shell, like that of all the members of its order, resembles a tusk. Most members of the scaphopoda have shells that exhibit a noticeable and characteristic anterior curvature— the shell of R. rectius, however, is unusually straight, hence the Latin word "rectius" (literally, "straight") in its binomial designation. R. rectius is a generalist carnivore found in shallow silty and sandy substrates. Aside from the usual diet of foraminiferans, it also eats sediment and fecal pellets.
|
|
Malvasia vines in Terra Rossa soil Terra rossa ( Italian for "red soil") is a well-drained, reddish, clayey to silty clayey soil with neutral pH conditions and is typical of the Mediterranean region. The reddish color of terra rossa is the result of the preferential formation of hematite over goethite. This soil type typically occurs as a discontinuous layer that ranges from a few centimeters to several meters in thickness that covers limestone and dolomite bedrock in karst regions. The high internal drainage and neutral pH conditions of terra rossa are a result of the karstic nature of the underlying limestone and dolomite.
|
|
These specimens were discovered, buried together, near the Sankeshu Village of Lufeng County, Yunnan, China in 2013, and are stored at the Bureau of Land and Resources of Lufeng County. The rocks that these specimens were preserved in, consisting of purple silty mudstone, belong to the Early Jurassic Shawan Member of the Lufeng Formation, which has been tentatively dated to being Hettangian in age. Xingxiulong was described in 2017 by Ya-Ming Wang, Hai-Lu You, and Tao Wang. The generic name (literally meaning "constellation") refers to the Xingxiu Bridge (星宿), which was constructed during the Ming Dynasty of China.
|
|
Zebrafish typically inhabit moderately flowing to stagnant clear water of quite shallow depth in streams, canals, ditches, oxbow lakes, ponds and rice paddies. There is usually some vegetation, either submerged or overhanging from the banks, and the bottom is sandy, muddy or silty, often mixed with pebbles or gravel. In surveys of zebrafish locations throughout much of its Bangladeshi and Indian distribution, the water had a near-neutral to somewhat basic pH and mostly ranged from in temperature. One unusually cold site was only and another unusually warm site was , but the zebrafish still appeared healthy.
|
|
In the west the contact with the Pliocene Oosterhout Formation is more gradual. In the Roerdal Graben the mostly Pliocene Kiezeloolite Formation is sometimes on top of the Breda Formation. Locally the Breda Formation can be subdivided into members: the Aalten Member (silty calcareous clay, rich in shells), the Eibergen Member (clay alternating with thin sand layers, with a basal conglomerate in which shark teeth and whale bones were found), the Zenderen Member (green, glauconiferous fine sand) and the Delden Member (sandy, glauconite and goethite bearing clay and loam. The Breda Formation corresponds largely with the Berchem Formation of northern Belgium.
|
|
The Kammanassie Mountain is one of the prominent east-west trending ranges composing the southern branch of the Cape Fold Belt. It was formed as a result of north-south oriented compressive stress during the Cape Orogeny 123-200 million years ago. The Kammanassie mountain range comprises almost exclusively the resistant quartz arenites of the Table Mountain Group, overlain on the lower slopes by the shale of the Bokkeveld group. Soils generally form a thin (<1 m) veneer of silty sands/sandy silts as a result of the steepslopes of the Kammanassie Mountain and predominantly quartzitic rocks.
|
|
At the ocean floor and below consists of several layers including nannomarls (1), clays (2), multicolored silty clay (3), that level located 5,000 meters deep, below are black shales (4a and 4b) and nano- limestones (5a and 5b). Below is the oceanic crust composing basalt (7) just below around 5,800 metres deep. The top part were formed during the Pleistocene and Miocene age, the second unit were formed during the Late Eocene age, the b subunit were also formed during the Late Paleocene age. The lower units were formed during the Valangian, Oxfordian and Kimmeridgian ages.
|
|
Goodenia paniculata is a herbaceous plant which reaches 50 cm (20 in) in height. Its leaves appear near the base of the plant and are obovate to oblanceolate in shape with serrated (toothed) margins, and measure 1.4 to 10 cm (0.5–4 in) long, and 0.6–1 cm (0.2–0.4 in) wide. Appearing from October to April, the flowers rise above the base on an 8 cm (2.5 in) high bare stalk. The habitat is freshwater wetland or swampy habitat on clay, silty or sandy soils, and it has been known to grow in soils with pH as low as 2.5.
|
|
Port Nelson, required a long causeway, to the centre of the silty Nelson River. Originally, the Hudson Bay port where the rail line was to terminate was to have been Port Nelson, at the mouth of the Nelson River, which drains Lake Winnipeg. During World War One construction of the rail line was suspended, to divert resources to the war effort. When construction was recommenced the decision was made that maintaining a port on the Nelson River would have too many ongoing expenses, and that the port should be relocated to the mouth of the Churchill River.
|
|
If the soil nails are not located above the groundwater table, the groundwater should not negatively affect the face of the excavation, the bond between the ground and the soil nail itself. Based upon these favorable conditions for soil nailing stiff to hard fine-grained soils which include stiff to hard clays, clayey silts, silty clays, sandy clays, and sandy silts are preferred soils. Sand and gravels which are dense to very dense soils with some apparent cohesion also work well for soil nailing. Weathered rock is also acceptable as long as the rock is weathered evenly throughout (meaning no weakness planes).
|
|
The waterlogged, silty soil on which the tunnel is constructed has been known to liquefy during an earthquake; to solve this problem, engineers injected industrial grout down to below the seabed to keep it stable. The walls of the tunnel are made of waterproof concrete coated with a steel shell, each independently watertight. The tunnel is made to flex and bend, similar to the way tall buildings are constructed to react if an earthquake hits. Floodgates at the joints of the tunnel are able to close and isolate water in the event of the walls' failure.
|
|
Sessile organisms must be specifically adapted to areas of relatively loose substrate to thrive in them, and the variety of species found on a silty, sandy or gravel bottom will depend on all these factors. Sedimentary bottoms have one important compensation for their instability, animals can burrow into the sediment and move up and down within its layers, which can provide feeding opportunities and protection from predation. Other species can dig themselves holes in which to shelter, or may feed by filtering water drawn through the tunnel, or by extending body parts adapted to this function into the water above the sand.
|
|
But it is the clay content of soil, with its very high specific surface area and generally large number of negative charges, that gives a soil its high retention capacity for water and nutrients. Clay soils also resist wind and water erosion better than silty and sandy soils, as the particles bond tightly to each other, and that with a strong mitigation effect of organic matter. Sand is the most stable of the mineral components of soil; it consists of rock fragments, primarily quartz particles, ranging in size from in diameter. Silt ranges in size from .
|
|
Furthermore, since R. musicalis requires sandy rather than silty riverbeds, land conversion for agriculture may be disrupting the establishment of young plants. Already, ongoing harvesting threatens the population, especially in the more populated Ebakika and Belavenoka River areas, where R. musicalis trees were observed to have been felled, presumably for edible palm cabbage. They are threatened by logging/wood harvesting, as their wood is harvested for temporary canoes in the wet season, and the core of the tree is harvested for edible palm-hearts in the lean season. The Ebakika population suffers most from over-harvesting, and it has the lowest population.
|
|
It outcrops in the eastern half of the counties of Norfolk and Suffolk, and is also represented in Essex and Hertfordshire. It was deposited in a near-shore environment, and comprises a range of sands, silty clays and flint- rich gravels representing various transgressive and regressive marine episodes. It rests in some places on the Red Crag Formation and in others unconformably on Coralline Crag, Palaeogene formations and Chalk Group bedrock. It is overlain by the Wroxham Crag Formation, and unconformably by the Kesgrave Catchment Subgroup (part of the Dunwich Group) and Mid Pleistocene glacigenic deposits.
|
|
The Dox Formation, also known as the Dox Sandstone, is a Mesoproterozoic rock formation that outcrops in the eastern Grand Canyon, Coconino County, Arizona. The strata of the Dox Formation, except for some more resistant sandstone beds, are relatively susceptible to erosion and weathering. The lower member of the Dox Formation consists of silty-sandstone and sandstone, and some interbedded argillaceous beds, that form stair-stepped, cliff-slope topography. The bulk of the Dox Formation typically forms rounded and sloping hill topography that occupies an unusually broad section of the canyon.Hendricks, JD, and GM Stevenson (2003) Grand Canyon Supergroup: Unkar Group.
|
|
At the time that these tidal flats were covered by the initial eruption of the Cardenas Basalt, the eastern grand Canyon region was at or very near sea level. Features found in the lowermost part of the Cardenas Basalt indicate that the basaltic lavas outpoured over unconsolidated sandy and silty Dox sediments at the time they were wet. It is unknown whether these sediments were slightly above or slightly below water level at the time they were buried by lava. The high proportion of altered glass in and the pervasive fracturing (hyaloclastite) of the basal Cardenas Basalt support this interpretation.
|
|
The Platte's water was silty and bad-tasting but it could be used if no other water was available. Letting it sit in a bucket for an hour or so allowed most of the silt to settle out. Those traveling south of the Platte crossed the South Platte with its muddy and treacherous crossings using one of about three ferries (in dry years it could sometimes be forded without a ferry) before continuing up the North Platte into present-day Wyoming to Fort Laramie. After crossing over the South Platte the travelers encountered Ash Hollow with its steep descent down windlass hill.
|
|
When described, Eorpidae was identified from a series of over thirty-five compression fossils in silty yellow to grayish shales recovered from southern fossil sites of the Ypresian age Okanagan highlands in Washington state and British Columbia. Both the McAbee Fossil Beds near Cache Creek, BC and the Falklands site, near Falkland, BC have sediments belonging to the Kamloops group shales. The Quilchena site outcrop near Quilchena, BC exposes shale of the Coldwater Formation, also a member formation of the Kamloops group. The southernmost fossils are from several outcrops of the Klondike Mountain Formation in Republic, Washington.
|
|
Shoreline of Gaillard Island The Island is and is configured in a triangular shape. It is located approximately east of Theodore Industrial Park Complex and approximately to southeast of downtown Mobile, AL. Thirty-one million cubic yards of dredged material pulled from the bay and nearby land was used to form the island. The excavated material consisted primarily of hard red clay from the land and silty sand infused with small amounts of shell and gravel from the bottom of the bay. The dredged material was transported by barge and hydraulically pumped to the island site to make the dikes.
|
|
The western trumpeter whiting, Sillago burrus, is a species of marine fish of the smelt whiting family Sillaginidae that is commonly found along the northern coast of Australia and in southern Indonesia and New Guinea. As its name suggests, it is closely related to and resembles the trumpeter whiting which inhabits the east coast of Australia and is distinguishable by swim bladder morphology alone. The species inhabits a variety of sandy, silty and muddy substrates in depths from 0 to 15 m deep, with older fish inhabiting deeper waters. Western trumpeter whiting are benthic carnivores which take predominantly crustaceans and polychaetes as prey.
|
|
The western trumpeter whiting ranges from southern Western Australia northwards along the coast of the Northern Territory and north Queensland as well as further north along southern Indonesia and Papua New Guinea. S. burrus inhabits water between 5 and 15 m deep, with juveniles inhabiting shallow shoreline areas and moving offshore to slightly deeper water as they mature. They do not extend to the depths of other co-occurring sillaginids such as S. robusta. S. burrus prefers silty-sand or muddy substrates, with the larger adults feeding near channels and sandbars, and may also be found on mostly sandy bottoms.
|
|
Chicotin Falls,Waterfalls of the Pacific Northwest: Chilcotin Falls a small cascade located about 23 km below its source at the head of a small canyon, is one of the few swift spots on the Chilcotin above its confluence with the Chilko. Chilcotin Lake, a small, irregularly shaped swamp-like lake, is located about 44 km upstream from the Chilko. The Chilko/Chilcotin confluence is unique in the sense that the Chilko is actually several times larger in volume than the Chilcotin, yet the Chilko still "joins" the Chilcotin. Below the confluence, the Chilcotin is quite large and silty.
|
|
The rigid pen shell can be found in coastal western Atlantic waters, ranging from southern Florida across the Caribbean and the West Indies to Brazil. It is a benthic shallow water species and is typically found in soft-bottom silty habitats, with its narrow anterior end (umbo) burrowed down and attached to underground substrate by its byssal threads. Its wider posterior gaping end extends just above the sea bottom surface to facilitate filter-feeding. Algae, invertebrates such as sponges and encrusting corals tend to grow on the exposed part of the shell and may camouflage it very well.
|
|
The Li River and tributaries drain the area from Guilin to Yangshuo, descending from 141 m at Guilin to 103 m at Yangshuo. Mean flow past Guilin is 215 cubic metre per second, and alluvium sediments consisting of well sorted gravels covered by silty sand, form floodplains and terraces along its route. Yet, it is the 2,600 m of Devonian and Carboniferous limestones and karst terrain within the Guilin Basin, that gives the area a dramatic landscape. Two distinctive types of karst are found, Fengcong, and Fenglin, which have evolved for the past 10-20 million years, within the Cenozoic.
|
|
The sandstone block containing specimen FMNH PR 3847; these rocks are typical of the Mussentuchit Member All of the localities that Eolambia were discovered in belong to the Mussentuchit Member of the Cedar Mountain Formation. Predominant rocks in the Mussentuchit consist of interleaved light gray to gray layers of muddy sandstone and mudstone. Deposits representing two separate river channel systems are also present in the Mussentuchit. The lower of these systems consists of four layers, respectively of muddy sandstone, fine-grained sandstone, silty mudstone, and fine-grained sandstone, with the latter two layers bearing plant debris.
|
|
Much of the Triangle area covers the historical (pre-1860s earthquake) riverbed of the nearby Ngaruroro River. As such soil types include Ngatarawa Gravels, Takapau Silty-loam (free draining red metal of mixed alluvial and volcanic origin) and shallow clay-loam soils with underlying deep free draining pumice. Alwyn Corban and Garry Glazebrook of Ngatarawa Wines pioneered wine production in the area in the 1980s and it is only with the growth of other boutique wineries in the late 1990s the "Bridge Pa Triangle" has been delineated and named. The area is also sometimes described as The Maraekakaho Triangle and The Ngatarawa Triangle.
|
|
The more or less articulated holotype specimen was found in a silty sandstone channel lithofacies (the rock record of a sedimentary environment), which is consistent with its carcass having been washed into a river channel, then buried quickly. The limbs and part of the tail may have been lost to scavengers or rot prior to the carcass being deposited. The parts missing from the left side of the skull were lost to erosion before the discovery. Since much of the skeleton was still under preparation at the time, researchers were unable to examine it for signs of predation and scavenging.
|
|
White-eye is white soil with lime nodules, which is non-stratified, geologically recent deposits of silty or loamy material, deposited by the wind and cemented together with calcium carbonate concretions. White soil deposits with lime nodules are found in the illuvial horizons of soils that formed on loess and loess-like loams. In the soil profile, the nodules stand out as bright spots with a clear and rounded shape. The size of spots is 1–2 cm in diameter, which is comparable to the size of an eye, and, more specifically, to that of the species of birds known as White-eye.
|
|
The smallscale redfin is found in turbid, eutrophic waters which have soft silty beds or over boulders to boulder in the Karoo region of South Africa. Its small size is understood to be an adaptation to the highly variable environment this fish inhabits, making it able to exploit food resources occurring in small spaces such as under boulders. It has a relatively long gut and this allows it to exploit a wider range of food than related species. The juvenile fish are found in sheltered areas of the rivers such as erosion gullies and areas with high levels of vegetation cover.
|
|
Excavation processes can be as simple as hauling the contaminated soil to a regulated landfill, but can also involve aerating the excavated material in the case of volatile organic compounds (VOCs). Recent advancements in bioaugmentation and biostimulation of the excavated material have also proven to be able to remediate semi-volatile organic compounds (SVOCs) onsite. If the contamination affects a river or bay bottom, then dredging of bay mud or other silty clays containing contaminants (including sewage sludge with harmful microorganisms) may be conducted. Recently, ExSitu Chemical oxidation has also been utilized in the remediation of contaminated soil.
|
|
The western blacknose dace inhabits the upper Mississippi, Ohio, and Great Lakes drainages, from as far north as south-central Canada to northern Alabama and Georgia and east to eastern Lake Erie. Young daces prefer to inhabit shallower, quiet pools with silty bottoms while more mature daces prefer streams with consistently high turbulence patterns and plenty of places to hide since they are a prey species. Most often they occupy water depths ranging from 100 to 200 mm with gravel or cobble bottoms. They can also be found in riffles hiding under large rocks or boulders.
|
|
Aliso Creek was formerly a major steelhead stream. Dam construction, upstream channelization, pollution, invasive plant species such as giant reed, as well as severe erosion problems that have in some places undermined the Aliso Creek Trail, have essentially eliminated steelhead with only occasional anecdotal sightings. Near the mouth, there was also a large population of tidewater goby (an endemic species to California) which have largely disappeared with human development. Carp of up to 18 inches (1.5 feet, 45 cm) have been taken from the creek; they are among the few fish species that thrive in the warm, silty and nutrient-rich waters.
|
|
This type of soil, the topsoil of which becomes bleached as a result of continual waterlogging, is often formed on sand-rich material over dense, sandy-loamy to silty-clayey subsoil - also called Sandkerf in German - in cool, moist climatic zones. As a result of frequent waterlogging throughout the seasons at low temperatures, minerals like iron and magnesium are released and deposited in sandy topsoils to the sides. Where the soil is saturated all-year round it turns into bog stagnogley and, eventually, into bog. Examples, known as missen occur in the Black Forest in Germany.
|
|
Partially melted and collapsed lithalsas (heaved mounds found in permafrost) have left ring-like structures on the Svalbard Archipelago Frost heaving requires a frost- susceptible soil, a continual supply of water below (a water table) and freezing temperatures, penetrating into the soil. Frost-susceptible soils are those with pore sizes between particles and particle surface area that promote capillary flow. Silty and loamy soil types, which contain fine particles, are examples of frost-susceptible soils. Many agencies classify materials as being frost susceptible if 10 percent or more constituent particles pass through a 0.075 mm (No.
|
|
Return flows generally return to the irrigation centre after a period of about three to four weeks; due to this, the farmers usually need to pour bleach into the water to clean it of any organisms that have entered the stream. If this is not taken care of, diseases such as typhoid or cholera could enter the irrigation and pose a risk of epidemic disease to surrounding towns and cities. The return flows in irrigation is nearly 50% of the water supplied in silty clay soil type in tropical countries. The salinity of the return flow water increases with decrease in % of return flow quantity.
|
|
P. exostigma from Red Sea, Egypt Pristiapogon exostigma, also known as Eyeshadow cardinalfish or oneline cardinalfish, is a small (max length is 11 cm) pale ray-finned fish from the family Apogonidae, the cardinalfishes with light-ended black stripe ending in black spot above centre of stripe. WoRMS - World Register of Marine Species - Pristiapogon exostigma (Jordan & Starks, 1906) It has an Indo-Pacific range which extends from the Red Sea to the Line Islands and Mangareva Islands and south to northern Australia and north to the Ryukyu Islands. This species spends the day sheltering under rock ledges. They can be found among isolated coral heads in the silty sheltered by reefs.
|
|
Just south, near Petersville, the Bedford has almost no siltstone layer. There are only a few thin siltstone beds present, and the Bedford grades almost imperceptibly into the Berea—both of which are composed of bluish-gray to gray clay shales and some gray silty shale. In southern Lewis County, there is no Bedford siltstone; the upper portion of the Bedford is a noticeably soft bluish-gray shale. Near Olympia in Bath County, the Berea Sandstone is not found and the Sunbury Shale overlies the Bedford, while near Irvine in Estill County to the south both the Berea and Bedford are missing and the Sunbury lies atop the Ohio Shale.
|
|
Angels Mountains Aroma Beach in April 2013 San Jose is located about kilometers south of Manila at the southern part of the province with a total land area of , and is bordered on the north by the municipalities of Rizal and Calintaan, on the east by the municipalities of Mansalay and Bulalacao, on the south by the municipality of Magsaysay, and on the west by the Mindoro Strait. Its jurisdiction includes Ambulong and Ilin Islands. Climatic condition is classified under Type A category and slope is generally flat. Soil composition developed from recent alluvial deposits which are silty-loam to clay loam and landforms consist of limestone and sedimentary rocks.
|
|
Eagle Peak (left), Uto Peak, and Mount Sir Donald The geology of the northern Selkirks reveals the tremendous tectonic changes that have shaped the terrain of western North America. Like much of British Columbia, the region was first studied by the prolific surveyor and geologist Dr. George Mercer Dawson in 1890. Topographical maps were first produced by A.O. Wheeler in the early 1900s, and in the 1970s, Wheeler's grandson, Dr. John Wheeler, conducted an extensive geological survey from land and air. From Rogers Pass, layers of quartzite and slate are visible, revealing the fact that the range was part of a large, silty continental shelf 600 million years ago.
|
|
Ulteramus republicensis is known only from one fossil, the part side of the holotype, specimen number UWBM 77532, which is housed in the collections of the Burke Museum of Natural History in Seattle, Washington. The specimen is preserved as a compression fossil in silty yellow to grayish shale, which was recovered from outcrops of the Tom Thumb Tuff member of the Klondike Mountain Formation in 1993 by Wesley Wehr. The formation is approximately Early Eocene, Ypresian in age, being radiometrically dated as . Ulteramus was first studied by the paleoentomologists S. Bruce Archibald from Simon Fraser University in Burnaby, British Columbia and Alexandr Rasnitsyn of the A. A. Borissiak Paleontological Institute.
|
|
A fossil shell of Calyptraea chinensis from the Pliocene of Italy Calyptraea chinensis occurs in North-West Africa, in the Mediterranean, the North Sea, the Black Sea and the Atlantic Ocean. These small snails can be found in the littoral and sublittoral zones along sheltered, rocky shores and on muddy or silty areas as long as they can cling to a hard substrate such as stones, living oysters and other shells. The species also occurs on the northern and western coasts of Britain and Ireland, but is absent from the North Sea and the English Channel. Calyptraea chinensis is known in fossil state from the Pliocene and the Early Pleistocene.
|
|
Preying mainly on small bony fishes and crustaceans, the Jenkins' whipray is commonly found in inshore, sandy or silty habitats shallower than . It is aplacental viviparous, with the females nourishing their developing young with histotroph ("uterine milk"). This species is regularly caught by coastal fisheries across much of its range, particularly in the Arafura Sea; its skin is highly valued for the large thorns, while the meat and cartilage may also be marketed. The International Union for Conservation of Nature (IUCN) has listed the Jenkins' whipray under Vulnerable, noting that it faces minimal conservation threats off northern Australia, which encompasses a large portion of its range.
|
|
The holotype skull (TMM 43631-1) that would be named Calsoyasuchus was discovered in 1997 by members of an expedition composed of crews from Texas Memorial Museum of the University of Texas at Austin, the Museum of Comparative Zoology at Harvard University, and the Seba Dalkai Navajo Nation School. It was found in the middle third of the silty facies of the Kayenta Formation, near the Adeii Eechii Cliffs. The skull is missing the lower jaws, part of the palate, most of the suspensorium (the bones that make up the region where the upper and lower jaws articulate), and the occiput and braincase. Sutures between the skull bones are mostly fused.
|
|
With the exception of a small inlier of Palaeocene sands at Witham, the lowest units of the Palaeogene sequence evident in Essex are the various Palaeocene/Eocene pebbly and shelly sand and clay formations of the Lambeth Group. Their outcrop reaches from Sudbury on the Norfolk border southwestwards to the Hertfordshire border at Bishop's Stortford. However the bedrock of the larger part of the county is formed by the silty clays and sandy clays of the succeeding Eocene age Harwich Formation which is ascribed to the Thames Group. Isolated patches of later Eocene sand, silt and clay occur in the area between Southend on Sea, Chelmsford and London.
|
|
The underlying geology at the site is Cretaceous Upper Chalk, supporting shallow well drained calcareous silty soils over chalk on slopes and crests. Typically these landscapes may be described as 'dramatic', due to their local scale, visual aesthetic and undulating nature. Escarpments are often formed where layers of chalk have been compressed to form a fold, or where the chalk has been faulted, resulting in accelerated erosion along the line of the weakness. Many chalk grassland slopes in England show the mark of centuries of grazing by sheep, the slopes bearing a stepped or striped appearance formed by a mixture of soil creep and sheep paths.
|
|
Water hickory attains its best growth on moist but well-drained loamy or silty soils in the Mississippi River Valley and along some Coastal Plain streams. However, because of its slow growth rate and past logging and land management practices, it is rare on these sites except where it has been favored by repeated "high-grade" logging. Water hickory is now most often found on wet sites where only a few other species of trees grow, it is somewhat intolerant of competition being shade intolerant. It is common on clay flats, sloughs, and backwater areas, but seldom in coastal swamps or sites where soils are continually saturated.
|
|
Yu is said to have eaten and slept with the common workers and spent most of his time personally assisting the work of dredging the silty beds of the rivers for the thirteen years the projects took to complete. The dredging and irrigation were successful, and allowed ancient Chinese culture to flourish along the Yellow River, Wei River, and other waterways of the Chinese heartland. The project earned Yu renown throughout Chinese history, and is referred to in Chinese history as "Great Yu Controls the Waters" (). In particular, Mount Longmen along the Yellow River had a very narrow channel which blocked water from flowing freely east toward the ocean.
|
|
Land degradation results in canyons like this one that cuts the loess plateau in Linxia County, Gansu. Reduced moisture suction due to a degraded vegetation layer formed this creek flowing into the lower Daxia River. Sichuan pepper shrubs planted on terraced gulch slope, to slow down erosion and utilize the land (Linxia City, Gansu). Soil erosion and waterfloods swell up the rivers with brownish waters—a suspension of silts, clays and other soil particles The Loess Plateau was formed over long geologic times, and scientists have derived valuable information about global climate change from samples taken from the deep layer of its silty soil.
|
|
The Woods Point Rd follows the river through this section. The Brisbane Bridge over the Yarra River, Warburton. Downstream of Warburton, the Yarra Valley gradually opens out and farms begin to appear, including beef and dairy farms, and by the town of Woori Yallock and the river's turn north, increasingly large areas are covered by vineyards, forming the Yarra Valley wine region. At Healesville, the river turns west again and the stream bed becomes increasingly silty, reducing the clarity of the water, and by the commuter town of Yarra Glen it begins to take on the brownish colour that the lower reaches are known for.
|
|
Historically, the river has been the focus of intense gold-mining. The Central Otago Gold Rush began in 1861, and it was this influx of people that led to the establishment of many of the river towns that still exist today, such as Alexandra, Clyde, and Cromwell. In 1956, a large hydro-electric dam was commissioned at Roxburgh, flooding the deep-sided Roxburgh Gorge and several well-known rapids, including the Molyneux Falls and the Golden Falls. Another large dam was commissioned at Clyde in 1992, flooding the Cromwell Gorge and the often photographed Cromwell Junction where the silty Kawarau River merged reluctantly with the clear Upper Clutha.
|
|
According to the U.S. Census Bureau, the county has a total area of , of which is land and (4.1%) is water. A minor bayou crosses Highway 33 and Highway 38 east of Des Arc Prior to settlement, Prairie County was large, flat grassland distinct from the swamps and bayous in the nearby Delta. Although cotton and other row crops grew well in the Prairie's silty loam soil, rice production changed the cultivation patterns in the county at the turn of the nineteenth century. Although some prairie and riparian areas has been preserved in conservation areas, a large portion (44 percent) of the county remains in cultivation.
|
|
The bottom of the Greenland Sea is a depression bounded to the south by the underwater Greenland-Iceland ridge and to the east by the Mohns Ridge and Knipovich Ridge (parts of the Mid-Atlantic Ridge). To the west, the bottom rises first slowly, but then rapidly toward the wide Greenland coastal strip. Silts fill the submarine hollows and gorges; silty sands, gravel, boulders, and other products of erosion coat the shelves and ridges. Although the deepest point inside of the sea is , depths down to have been measured in the Molloy Deep of the Fram Strait which connects the sea to the Arctic Ocean on the north.
|
|
Although this is not a standard penetration test, and should not be regarded as such, it may at least give an indication as to whether the deposit is really as loose as the standard test may indicate. The usefulness of SPT results depends on the soil type, with fine-grained sands giving the most useful results, with coarser sands and silty sands giving reasonably useful results, and clay and gravelly soils yielding results which may be very poorly representative of the true soil conditions. Soils in arid areas, such as the Western United States, may exhibit natural cementation. This condition will often increase the standard penetration value.
|
|
Mahidolia mystacina, the flagfin prawn goby, flagfin shrimpgoby or smiling goby, is a species of goby native to the Indian Ocean and the Pacific Ocean from Delagoa Bay, Mozambique to the Society Islands and from southern Japan to Samoa and northern Australia. This species occurs in marine and brackish waters, being found in coastal bays, estuaries and reef bases where the bottom is silty or muddy at depths of from . This species is a commensal with a species of alpheid shrimp, using its burrow as its home. This species can reach a length of TL. This species can also be found in the aquarium trade.
|
|
It was found closer to Škrda, approximately away from the bow section. Aldenhams boilers and propellers were still operating as the ship sank, and the section struck the silty seafloor at a depth of , with her keel on top. Her rudder is now at a depth of . The wreck was declared a British war grave, and forms a part of "the Ghost Fleet of Pag" together with wrecks of Kriegsmarine destroyer TA20 (ex-Italian Audace), corvettes UJ 202 and UJ 208 (ex-Italian Melpómene and Spingarda) sunk in the Action of 1 November 1944, and World War I wrecks of Austro-Hungarian steamships SS Albanien and SS Euterpe.
|
|
The trumpeter whiting, Sillago maculata, (also known as the winter whiting or diver whiting) is a common species of coastal marine fish of the smelt-whiting family, Sillaginidae. The trumpeter whiting is endemic to Australia, inhabiting the eastern seaboard from southern New South Wales to northern Queensland. The species is found in bays, estuaries, coastal lakes and mangrove creeks on silty and muddy substrates in waters ranging from 0 to 30 m deep, occasionally inhabiting sandy and seagrass beds. The trumpeter whiting is a benthic carnivore, consuming a variety of crustaceans, polychaetes and molluscs, with a dietary shift occurring as they mature and move into deeper waters.
|
|
In both cases a soil in a saturated loose state, and one which may generate significant pore water pressure on a change in load are the most likely to liquefy. This is because loose soil has the tendency to compress when sheared, generating large excess porewater pressure as load is transferred from the soil skeleton to adjacent pore water during undrained loading. As pore water pressure rises, a progressive loss of strength of the soil occurs as effective stress is reduced. Liquefaction is more likely to occur in sandy or non-plastic silty soils, but may in rare cases occur in gravels and clays (see quick clay).
|
|
The Citharexylum berlandieri (Tamaulipan fiddlewood), Rivina humilis (pigeonberry) and Leucophyllum frutescens (Texas sage) are also native flora. Soils are mostly of clay to silty clay loam texture, moderately alkaline (pH 8.2) to strongly alkaline (pH 8.5 and with a significant degree of salinity in many places; other types of soils present around the city include Cameron clay and sporadic amounts of Laredo silt loam. Due to Brownsville's proximity to the coast, Lomalta clay is common around the swamp areas of the vicinity. Several parts of the city have a high risk of localized flooding because of flat topography, ubiquitous low-permeability clay soils, and inadequate infrastructure funding.
|
|
The majority of the township is covered in only a very thin layer of soil, in spite of this, there are very few rock outcrops in the area. The only notable outcrop within the township is along the Saint Lawrence river in New Wexford. None of the bedrock in the township contains phosphates, metalliferous ores, mica or anything else of notable value; the sands in the area are also of little value as they are too silty and fine to be used as building material. There is, however, a high concentration of stones in much of the local soil, making it suitable for gravel.
|
|
The one side that was not protected by the wall was the lake side of the site, the lake bank creating a steep enough boundary on this northern side to provide protection. Besides topographical settings, the environment of the Lake George site was extremely favorable for occupation. In prehistoric times the rich soils and the varying ecologies supported a vast array of plant and animal species. The natural levees created by deposits from the Mississippi were made of rich sandy and silty loams which allowed the common Southeastern deciduous hardwoods, such as hickory, elm, ash, cottonwood, maple, pecan, hackberry, honey locust, sycamore, and even gums and oaks to flourish.
|
|
The river is characterised by low flow rates, varying depths and a substrate that alternates from mud to sand. An area of riparian woodland, with mature tree species, forms the riparian vegetation along the river. The soil consists principally of poorly- to very poorly-drained organic soils and regosols either as separate entities or in a random inter-layered manner. The organic component has a variable thickness of peat (30 to over 100 cm) formed under relatively base-rich conditions, is occasionally underlain by shell marl (Chara marl matrix permeated with shell residues) 60 cm or more thick with a further layer of calcareous silty clay beneath the marl.
|
|
The Corton Formation is a series of deposits of Middle Pleistocene age found primarily along the coasts of Suffolk and Norfolk in eastern England. The formation comprises two stratigraphic facies, an upper thicker fine to medium sand which becomes a pebbly sand towards the base (around Lowestoft, the pebbly sands may be more extensive), and a lower till comprising very silty sandy clay or clayey sand. The formation is named after Corton, Suffolk, the type locality for the Anglian Stage of the Pleistocene in Britain.Jones R.L. & Keen D.H. (1993), Pleistocene Environments in the British Isles, London: Chapman & Hall, The formation is overlain by the Lowestoft Formation.
|
|
In May 1929, the land on which the cave is located was purchased by the then District Council of Mount Gambier. In 1940, the cave was sealed after being inspected by one of the councillors. In 1964, the district council invited expressions of interest for “investigations for tourist potential of the cave.” One investigate include a team of four divers including “the well-known Dave Burchell” who carried out an exploratory dive with the following outcome: > After digging their way through 100 years of rubbish and entering a dark > muddy passage, a relatively small lake was discovered with a very silty > floor, which was only 17 feet deep.
|
|
The ice core is 2035 m long and has a diameter of 10 cm. It was drilled with less than 6° deviation from vertical, and less than 2 m is missing. The deepest 22 m consists of silty ice with an increasing concentration of pebbles downward. In the depth interval 800 to 1400 m the ice was extremely brittle, and even careful handling unavoidably damaged this part of the core, but the rest of the core is in good to excellent condition.” The depth interval 800 to 1400 m would be a period approximately from about two thousand years ago to about five or six thousand years ago.
|
|
A shear band (or, more generally, a 'strain localization') is a narrow zone of intense shearing strain, usually of plastic nature, developing during severe deformation of ductile materials. As an example, a soil (overconsolidated silty-clay) specimen is shown in Fig. 1, after an axialsymmetric compression test. Initially the sample was cylindrical in shape and, since symmetry was tried to be preserved during the test, the cylindrical shape was maintained for a while during the test and the deformation was homogeneous, but at extreme loading two X-shaped shear bands had formed and the subsequent deformation was strongly localized (see also the sketch on the right of Fig. 1). Fig.
|
|
The Dravo Gravel Site (33HA377) is an archaeological site located above the Great Miami River in Miami Township, Hamilton County, Ohio, United States. Discovered in the middle of a gravel pit, the site is a leading example of the local manifestation of the Archaic period. The site lies atop a Miami River terrace outside the village of Cleves, occupying a soil location with a small layer of silty loam that covers a deep deposit of gravel. Contributing to the site's desirability for ancient occupation is a small stream, which inhabitants could have used as a source for water instead of climbing down to the riverside.
|
|
U.S. Geological Survey Professional Paper 1698, Chapter F It is characterized by significant amounts of andesitic volcanic debris, and is composed of primarily of light-grey to brown, lenticular bedded, loosely cemented silty claystone, mudstone, siltstone, tuffaceous sandstone and, in some areas, andesitic conglomerate. Beds of low-rank coal and carbonaceous shale occur in the upper in some areas. Several early Paleocene lava flows are present in the upper part of the Denver Formation at North and South Table Mountain near Golden, Colorado. The Ralston Dike, a body of intrusive monzonite located several miles to the northwest, probably represents the volcanic vent from which the flows erupted.
|
|
Artifacts documented at the site consist of ceramics, stone tools including a hammerstone, lithic debitage, and animal bones. A distinctive feature left behind by the occupants is a pit across and deep lined with a silty clay not found anywhere else at the site. Archaeologists have tentatively identified this as a jig for processing wild rice, a staple food in the region. As of the site's 1988 National Register nomination, only 2.5% of its area had been excavated, and no radiocarbon or thermoluminescence dating had been conducted, so its dating to the late Woodland period derived only from the surface treatment of the ceramic sherds, a projectile point, and the suggestion of intensive wild rice use.
|
|
Another engineering firm, Asselin, Benoît, Boucher, Ducharme & Lapointe (ABBDL) was tasked with a feasibility study on the more southerly NBR (Nottaway, Broadback, Rupert) concept. At RSW the development of the La Grande River was championed by François Rousseau, one of firm's associates and a former Hydro-Québec senior engineer. A final decision to build the hydroelectric complex on the La Grande hydrographic system was made in 1972, after engineers determined the NBR project would be less cost effective because of the silty nature of the soils in the NBR area. The La Grande option had the added advantages of a lesser impact on First Nations hunting and fishing, on the boreal forest and would require less flooding.
|
|
Hoplitomeryx is a genus of extinct deer-like ruminants which lived on the former Gargano Island during the Miocene and the Early Pliocene, now a peninsula on the east coast of South Italy. Hoplitomeryx, also known as "prongdeer", had five horns and sabre-like upper canines similar to a modern musk deer. Its fossilized remains were retrieved from the late 1960s onwards from reworked reddish, massive or crudely stratified silty-sandy clays (terrae rossae), which partially fill the paleo-karstic fissures in the Mesozoic limestone substrate and that are on their turn overlain by Late Pliocene-Early Pleistocene sediments of a subsequently marine, shallow water and terrigenous origin. In this way a buried paleokarst originated.
|
|
It has been suggested that these ice layers are created by ice segregation but, it is most certainly buoyancy that is the reason for the formation of the ice layers. Buoyant rise of the core occurs which freezes when the permafrost reaches the area and creates the ice layers. In the stable, mature phase, the surface has risen further to a level at which the snow cover during winter is thinned by the wind which in turn makes it possible for deeper freezing. In the mature stage, the frozen core has reached beyond the peat layer into the underlying silty sediments and during summer thawing of the core occurs but not to an extent where the core thaws completely.
|
|
The Birch Mountain (BM) kimberlite field was discovered in 1998 and lies about north of Edmonton and northwest of Fort McMurray. It is part of the Northern Alberta kimberlite province, along with the Buffalo Head Hills kimberlite field and the Mountain Lake cluster. The BM diatremes are hosted in the marine shales and silty shales of the Late Cretaceous Smoky or La Biche Group, and they are thought to have been erupted in an open marine to near shore marine setting in the Western Interior Seaway. Unconsolidated Quaternary sediments that reach thicknesses of more than now cover the bedrock in the area, so the diatremes were located primarily by aeromagnetic surveys followed by drilling.
|
|
Nabua has about 8,803.0600 hectares or 99.42% very low elevation or less than 100 meters elevation and remaining 51.3593 hectares or 0.58% of low elevation or between 100–300 meters elevation. Its slope covers about 7,927.3616 hectares or 89.53% which are level to nearly level (0-3%) while the remaining 927.0577 hectares or 10.47% are rolling to moderately steep (18-30%) As the dominantly alluvial plain, the municipality of Nabua has the prevalent soil types classified as either clay loam or sandy loam having silty texture. These soil types are very favorable for agricultural usage. The geological characteristics for Nabua consist of: Upper Pleistocene (Sandstone and shale), Pliocene Pleistocene (Volcanoclast alluvial fans), and Recent (Alluvium or rice terraces).
|
|
Records of the deepwater stingray come from a number of locations scattered widely in the Indo-Pacific: KwaZulu-Natal in South Africa and Mozambique, the Gulf of Mannar, the northern Andaman Islands, the South China Sea, the Ryukyu Islands and the Kyushu-Palau Ridge, along the southern coastline of Australia, northwestern Australia from the Rowley Shoals to Shark Bay, northeastern Australia from Townsville to Wooli, New Caledonia, and Hawaii. This bottom-dwelling species generally inhabits the upper continental slope at depths of , over muddy or silty substrates. An anomalous record from only deep off Mozambique was made. It seems to be locally common in tropical Australian waters, but may be rarer elsewhere.
|
|
The mud pits themselves show a tan-colored, silty to sandy claystone with abundant plant fragments and root traces. At their margins, the laminae of the surrounding mudstone are deformed or truncated, suggesting that the mudstone was partly fluid, plastic, and brittle at the time when the skeletons were deposited. Fragments of the crust topping one of the mudstone layers were found within the pits, indicating that the crust collapsed downwards into the pits. The deformation structures and the consistent size of the pits suggest that they represent the footprints of giant sauropods such as Mamenchisaurus sinocanadorum, which was likewise found in the Shishugou Formation and would have had a mass of over and a limb length of over .
|
|
The sandstone beds within this member commonly exhibit full or partial Bouma sequences. The beds within this member commonly exhibit evidence of penecontemporaneous deformation due to downslope slumping. The well-known Squantum Member is also known as the Squantum diamictite, Squantum ‘Tillite’, Squantum Tillite, or the Squantum Tilloid. It consists largely of diamictites that are a heterogeneous and poorly sorted admixture of rare boulders up to 1.2 m in diameter, pebbles, cobbles, and sand in a silty-clay matrix. These diamictites occur as beds, which range in thickness from 18 to 215 m (60 to 705 ft) and are typically interbedded with purplish, greenish and grey siltstone, sandstone, and medium-to fine-grained argillite.
|
|
Although the species was first found only as subfossil remains by Annandale, he believed it was probably not extinct, and that some of the deposits he saw were likely recent in age. Living specimens of the species have since been obtained from the northwestern part of the Persian Gulf, including in "muddy and silty substrates" around Failaka Island of Kuwait. Within Iraq, Annandale collected his specimens from a sandy lake-bed deposit, in the vicinity of Nasiriyah on the Euphrates. Eames and Wilkins found the species in borings made in the Hammar Marshes, and Plaziat and Younis found it in other localities of the Hammar Formation; they described it as a typical species of this formation.
|
|
Both specimens of Repelinosaurus were discovered in the Purple Claystone Formation of the Luang Prabang Basin in northern Laos. This sedimentary unit mostly consists of purple silty-claystones mixed with layers of conglomerates and sandstone, as well as volcaniclastic sediments. Estimated dates for the age of the formation have ranged from the Late Permian to the Late Triassic or even the earliest Jurassic period. More recently, radiometric dating using U—Pb geochronology from detrital zircon has yielded a maximum age for deposition of 251.0 ± 1.4 Ma. However, the mixing and reworking of the sediments implies that the actual depositional age of the formation is probably younger than this, likely placing it in the Early Triassic.
|
|
After the war, the Tiergarten became part of the British Occupation sector of West Berlin. The area however underwent a sudden, violent change; much of the wooded area was felled and turned to firewood due to the shortage of coal, and the now empty fields were turned into temporary farmland by order of British troops. There were around 2,550 plots of land available for growing potatoes and vegetables. However, these two factors caused the once great forest to nearly disappear; only 700 trees survived out of over 200,000 that once lined the parkway, the bodies of water turned silty, every bridge was destroyed, the monuments lay on their sides and were badly damaged.
|
|
Aipysurus duboisii, also known as the Dubois' sea snake or reef shallows sea snake, is a species of venomous sea snake. Its geographic range includes Papua New Guinea, New Caledonia and the northern, eastern and western coastal areas of Australia, that is the Coral Sea, Arafura Sea, Timor Sea and Indian Ocean.Aipysurus duboisii — Dubois' Seasnake, Australian Department of Sustainability, Environment, Water, Population and Communities They live at depths up to 80 meters (262 feet) in coral reef flats, sandy and silty sediments which contain seaweed, invertebrates and corals or sponges that can serve as shelter. These snakes feed on moray eels and various fish that live on the seafloor, up to 110 cm (3.6 feet) in size.
|
|
Pterophyllum scalare, most commonly referred to as angelfish or freshwater angelfish, is the most common species of Pterophyllum kept in captivity. It is native to the Amazon Basin in Peru, Colombia, and Brazil. Particularly to the Ucayali river in Peru, the Oyapock River in French Guiana, the Essequibo River in Guyana, the Solimões, the Amapá, and the Amazon rivers in Brazil. It is found in swamps or flooded grounds where vegetation is dense and the water is either clear or silty. Its native water conditions range from a pH of 6.0 to 7.0, a water hardness range of 3 to 10 °dH, and water temperature ranging from 26 to 30 °C (75 to 86 °F).
|
|
Hole and a group of children in 1983 entered hearing rooms of the Wisconsin State Capitol with Hole's puppets to encourage legislators to name the state soil, which swayed the many individuals who regarded the campaign as "somewhat silly". Selected to represent the more than 500 major soil types in Wisconsin, the Antigo Silt Loam is a productive, level, silty soil of glacial origin, subsequently enriched by organic matter from prehistoric forests. The soil, named after Antigo, Wisconsin, is found chiefly in Wisconsin and stretches in patches across the north central part of the state, and it is a versatile soil that supports dairying, potato growing, and timber.Blue Book (2015-2016) Wisconsin State Symbols, pgs.
|
|
The ore deposit resides within dolomite from the Society Cliffs Formation covered with dolomitic shale from the Victor Bay Formation, which together form the Uluksan Group and reside on top of silty shale. The ore is believed to have formed when hot saline water bearing the metal ions of sodium, calcium, chlorine, and sulfate mixed with cooler carbonate-rich brine in the presence of natural gas or methane, which produced hydrogen sulfide through reducing the sulfate. The hydrogen sulfide then reacted with the metals to form the sulfides of marcasite (FeS2), pyrite (FeS2), sphalerite ((Zn,Fe)S), and galena (PbS). The Nanisivik deposit once contained 60 million metric tons of pyrite and 12 million tons of lead-zinc ore.
|
|
With the clear-cutting of the forests during the 20th century, specifically in 1997, soil began to erode away in great amounts and was unable to hold water, thus lowering the river's baseflow during the dry season and causing floods of greater size during the monsoon. The erosion has also made the Salween very silty. The construction of logging roads made it even easier for Burmese interests to enter the area, exploiting other resources and severely damaging the native way of life. Although strict limitations have been imposed on logging, illegal practices continue, including one in 2009 involving the discovery of teak logs floating in the river on the Thailand-Burma border.
|
|
Equisetum arvense grows in a wide range of conditions, in temperatures less than to greater than and in areas that receive annual rainfall as low as and as great as . It commonly occurs in damp and open woodlands, pastures, arable lands, roadsides, disturbed areas, and near the edge of streams. It prefers neutral or slightly basic clay loams that are sandy or silty, especially where the water table is high, though it can occur occasionally on slightly acid soils. The plant is widespread in the northern hemisphere, growing as far as 83° North in North America and 71° North in Norway, Sweden, Finland, and Russia and as far south as Texas, India, and Iran.
|
|
Euprymna tasmanica, also known as the southern dumpling squid or southern bobtail squid, is a bobtail squid that lives in the shallow (0.5 m to at least 80 m) temperate coastal waters of southern Australia's continental shelf. It lives for between 5 and 8 months and the adults can grow up to 6 or 7 cm long with a mantle length of 3 to 4 cm. They are found in seagrass beds or areas with soft silty or muddy bottoms from Brisbane on the east coast to Shark Bay on the west, as well as around Tasmania. Southern dumpling squid are nocturnal and during the day hide in sand or mud covered in a mucus-lined coat of sediment.
|
|
Lawyers Sluice, built in 1949, with the 2003 pumping station to the left In order to improve the gravity discharge of water from the district, the sluice into the River Nene at Peters Point was rebuilt in 1937. Its width was reduced slightly to , but the cill was lowered to below Ordnance Datum. In order to cope with the silty sub-soil in which the foundations had to be built, well point dewatering equipment was used for the first time in England. This consists of inserting small tubes into the ground and pumping them with a high-efficiency vacuum pump to lower the ground water levels, creating a dry and stable working environment.
|
|
The specimen which Langston designated as the holotype was discovered by Rainier Zangerl, Bill Turnbull and Charles Barber on a Field Museum expedition in 1946 and was given catalogue number FMNH P 27383. It consists of less than one half of the skull, a number of vertebrae, and significant portions of the fore- and hindlimbs. Preserved cranial material includes a partial quadrate, left maxilla, teeth, jugal, lacrimal, nasal (with the namesake crest), postorbital, frontal, prefrontal, parietal, squamosal, and paroccipital process and a portion of the predentary bone. The specimen was likely washed out to sea by a river, where it eventually sank and was buried in the silty carbonate sediments of the Mississippi embayment.
|
|
In total, there are more than 1000 stone tools discovered out of 50,000 artefacts recorded from Ille Cave— a part of Dewil Valley located in Brgy, New Ibajay, El Nido, Palawan— since the start of the excavations in 1998 under the direction of Wilhelm Solheim. These stone tools and other artifacts recovered helped provide estimate timeline for the deposit of the cave for the site. Excavations of both east and west mouth of Ille Cave in 2005 by the UP-ASP also showed presence of other stone materials and stone tools. It was reported that the sequence in the east mouth that was of silty topsoil contained post- Neolithic artifacts which includes stone and shell beads.
|
|
Comfort issues, stressing of muscles and joints, particularly with less physically fit divers, may bias the choice towards softer fins that produce less thrust and maneuverability. Divers needing maximum maneuverability will usually choose stiff paddle fins which can be effective for reversing out of a tight spot but are inefficient for cruising using flutter kick. These fins work well with the frog kick, which is also less likely to shed vortices downward and disturb silty bottoms, so this style of fin is popular for cave and wreck penetration diving. Experimental work suggests that larger fin blades are more efficient in converting diver effort to thrust, and are more economical in breathing gas for similar propulsive effect.
|
|
The city's topography varies from the low-lying downtown, located along the banks of Ebey Slough above sea level, rising to near Smokey Point and over in the eastern highlands. Marysville sits in the watershed of two major creeks, Quilceda Creek and Allen Creek, and approximately 70 minor streams that flow into Ebey Slough and Snohomish River. During the early 20th century, repeated controlled flooding and other engineering works in the Snohomish River delta contributed to the replenishment of the area's fertile silty soil for use in farming. The Marysville skyline is dominated by views of Mount Pilchuck and the Cascade Mountains to the east and the Olympic Mountains to the west.
|
|
Undulopsychopsis alexi is known only from one fossil, the part and counterpart holotype, specimen number CYNB044, which is housed in the collections of the Chaoyang Bird Fossil National Geopark Chaoyang, Liaoning, China. The specimen is preserved as a compression fossil in silty yellow to grayish mudstone, dating from the Lower Barremian to Upper Aptian in age, which was recovered from outcrops of the Yixian Formation. Undulopsychopsis was first studied by the paleoentomologists Yuanyuan Peng and Dong Ren from the Capital Normal University in Beijing with Xiaodong Wang from Chaoyang Bird Fossil National Geopark and Vladimir N. Makarkin of the Far Eastern Branch of the Russian Academy of Sciences. Their 2011 type description of the new genus and species was published in the online journal ZooKeys.
|
|
Fforest is the name applied to a small upland area adjoining the Vale of Towy, some 4 km north of the town of Llandovery in Carmarthenshire, Wales. Stretching for a distance of 4 km from southwest to northeast the area rises to two separate summits either side of a broad saddle; one at 297m in the south and a second one to the northeast crowned by a triangulation pillar which attains a height of 341m. The ridge is privately owned hence there is no public access to any part of it though it is encircled by public roads and paths.Ordnance Survey Explorer map sheet 187 Llandovery/Llanymddyfri The hills are formed from silty grey mudstones of uppermost/latest Ordovician age ascribed to the Yr Allt Formation.
|
|
Acentronura breviperula, also known as the shortpouch pygmy pipehorse, dwarf pipehorse and northern little pipehorse, is a species of pygmy pipehorse, a member of the family Syngnathidae, the seahorses and pipefishes. It occurs in the Indo-Pacific region from the eastern Andaman Sea, through the Malay Archipelago to the Western Pacific as far east as New Guinea and the northern Great Barrier Reef. It is a small, drab-coloured pipehorse which is very well camouflaged among sandy and silty habitats, although it is usually found on substrates of coral rubble or in areas of sparse algal growth. It has a prehensile tail similar to that of a seahorse but it lacks an angled head and swims with its body held in a horizontal position.
|
|
The bone remains of large mammals are, in general, dispersed, eroded and fragmented, evidencing trawling by fluvial transport, although in clay or silty sediments there are usually elements in anatomical connection, with little or no transport (primary accumulation), and without predators or scavengers, even the skeleton of an elephant specimen (in the so-called "α" concentration) is practically complete. On the other hand, there is evidence of human manipulation in some elephant bones: certain fractures and cut marks by lytic instruments for dying. The abundant accumulations of elephant remains in Ambrona are similar to the modern sites popularly known as "Elephants' graveyards". In these places, close to water sources, corpses tend to accumulate, mainly elephants, but also other mammals, and have been well studied in African parks.
|
|
Over three-quarters of the river's flow is diverted through the Clear Creek Tunnel and away from the Trinity River, causing the river below the dam to become warm, silty, shallow and slow-flowing, attributes that hurt young salmon. Furthermore, the Trinity Dam forms a blockade that prevents salmon from reaching about of upriver spawning grounds. In the early years of the 21st century, the Bureau of Reclamation finally began to steadily increase the water flow downstream from Lewiston Dam. While providing less water for the CVP altogether, the new flow regime allows operations to meet the line drawn by Reclamation itself in 1952 stating that at least 48% of the river's natural flow must be left untouched in order for Trinity River salmon to survive.
|
|
The San Juan River provides habitat for at least eight native fish species – cutthroat trout, roundtail chub, speckled dace, flannelmouth sucker, bluehead sucker, mottled sculpin, Colorado pikeminnow, and razorback sucker, with a possible ninth, bonytail chub. The latter three are considered endangered under the Endangered Species Act of 1973, and are rarely found in the San Juan River today, if at all. With the exception of trout and dace, which inhabit clear, cold mountain streams in the headwaters, the native fishes are mostly adapted to the warm, shallow and silty characteristics of the lower San Juan. The San Juan cutthroat trout, a unique lineage of cutthroat trout endemic to the river and its tributaries, was considered extinct until its rediscovery in 2018.
|
|
This activity further raised the northern Appalachian Mountains and formed the Caledonian Mountains in Great Britain and Scandinavia. The west coast of Devonian North America, by contrast, was a passive margin with deep silty embayments, river deltas and estuaries, found today in Idaho and Nevada; an approaching volcanic island arc reached the steep slope of the continental shelf in Late Devonian times and began to uplift deep water deposits, a collision that was the prelude to the mountain- building episode at the beginning of the Carboniferous called the Antler orogeny. Sea levels were high worldwide, and much of the land lay under shallow seas, where tropical reef organisms lived. The deep, enormous Panthalassa (the "universal ocean") covered the rest of the planet.
|
|
However, given the estuary's importance, there have been few comprehensive scientific studies conducted in the bay. Species diversity as measured through richness and total biomass is generally low with 16 macro invertebrate species encountered in a 2007 field study, including teleost fishes, isopods, amphipods, and crangon shrimps. During the summer 2007, Nushagak Bay was found to have a Shannon Diversity (H’) value of 1.54, ranking it below similar subarctic estuaries such as Ungava Bay, near Labrador (60°34’N, 67°35’W) and Lower Herring Bay in Price William Sound (60°30’N, 147°13’W) where the Shannon Diversity values are H’=2.11 and H’=2.5, respectively. This lower diversity of Nushagak Bay is most likely due to its low salinity, high turbidity, and silty sediments.
|
|
Nikolai Ramsey of the Grand Canyon Trust describes the clearer, colder river as a "death zone for native fish", such as the endemic Colorado pikeminnow and humpback chub, which are adapted to survive in warm, silty water. According to biologist and river guide Michael P. Ghiglieri, many drowning deaths by boaters in the Grand Canyon have been caused or exacerbated by rapid hypothermia and hypothermic shock caused by entering the cold water. He further described that during the record post-dam high-flow season of 1983 (mentioned above), there was only one boating fatality in the canyon, providing a strong challenge to views that the dam, by reducing and mediating river flows, increases the safety of canyon river users.Ghiglieri, pp.
|
|
Pyritized fossil of Vampyronassa rhodanica from La Voulte-sur-Rhône The late Middle Jurassic lagerstätte at La Voulte-sur-Rhône, in the Ardèche region of southwestern France, offers paleontologists an outstanding view of an undisturbed paleoecosystem that was preserved in fine detail as organisms died at the site and settled to the bottom of a shallow epicontinental sea, with a folded floor that in places exceeded 200 m at this site. The site preserves a marine system of the Lower Callovian stage, a little over 160 mya. The sequence is exposed in a series of quarries at La Boissine, west of the village of La Voulte-sur-Rhône. Iron pyrites in the silty shale are symptoms of an anoxic environment.
|
|
The plant grows mainly in salt flats (Arabic: sabkha) in hard soil surfaces, and can also be found growing along riverine gulches (Arabic: wadi) and in drainage runnels that have alkaline and saline soils, subsequently accumulating in its leaves a high quantity of sodium and chloride (chlorine ions).Al-Ani, Habib, Abduaziz and Ouda, Plant Indicators in Iraq: II. Mineral Composition of Native Plants in Relation to Soils and Selective Absorption, Plant and Soil, Vol. 35, No. 1 (August 1971), pp. 30–33. It thrives in silty soil which is very slippery and muddy when wet, but becomes baked hard with a flaking surface which breaks up into a fine dust when dry, and can especially be seen growing on hummocks in such terrain.
|
|
The western Weald is drained by the Western Rother and its tributaries, notably the River Lod, and by the River Kird and Loxwood Stream, all of which are tributaries of the River Arun. Water quality is above average for south eastern England, with chemical water quality variable but biological quality good to exceptional in all of the rivers, according to the Environment Agency. Silt from intensive arable farming on silty erosion prone soils on the greensand is a problem in the Western Rother. The Environment Agency is working with farmers to control run off from fields, by using reduced cultivations with less ploughing, having grass margins at the foot of slopes and moving gateways away from the foot of slopes.
|
|
The Sillaginidae are not related to a number of fishes commonly called 'whiting' in the Northern Hemisphere, including the fish originally called whiting, Merlangius merlangus. The smelt- whitings are mostly inshore fishes that inhabit sandy, silty, and muddy substrates on both low- and high-energy environments ranging from protected tidal flats and estuaries to surf zones. A few species predominantly live offshore on deep sand shoals and reefs, although the larvae and juvenile phases of most species return to inshore grounds, where they spend the first few years of their lives. Smelt-whitings are benthic carnivores that prey predominantly on polychaetes, a variety of crustaceans, molluscs, and to a lesser extent echinoderms and fish, feeding by detecting vibrations emitted by their prey.
|
|
The remains of Heptasuchus accumulated at the base of a muddy sheet flood deposit that includes intraformational carbonate-rich conglomerate co-mingled with the skeletal elements, at what was once thought to be the base of the Popo Agie Formation in a silty, sandy matrix overlain by an oxidized mudstone. The fossil locality probably represent a drought assemblage since the specimens are weathered, disarticulated, and confined to a small area that later served as a locus for deposition of water and sediment. Thoroughly disarticulated and showing signs of subaerial weathering, the remains of Heptasuchus occur alongside those of small, unidentified archosaurs and phytosaurs (represented by teeth and possible skeletal elements or in the case of the small archosaur, a nearly complete series of vertebral centra).
|
|
Allorapisma chuorum is known only from two fossils, the part side of the holotype left fore-wing, specimen number SR 08-14-01, and the part side of a paratype right fore-wing, specimen number SRUI 08-04-01. Both the fossil are currently housed in the collections of the Stonerose Interpretive Center Republic, Washington, US. The specimens are preserved as compression fossils in silty yellow to grayish shale, which were recovered from outcrops of the Tom Thumb Tuff member of the Klondike Mountain Formation. The formation is approximately Early Eocene, Ypresian in age, being radiometrically dated as . Allorapisma was first studied by the paleoentomologists Vladimir N. Makarkin of the Far Eastern Branch of the Russian Academy of Sciences and S. Bruce Archibald from Simon Fraser University in Burnaby, British Columbia.
|
|
The authors calculate that miscanthus on marginal land in China can produce 31.7 EJ (exajoule) of energy annually, an amount equivalent to 39% of the country's 2019 coal consumption. Miscanfor predicts that 30 days of soil dryness is the mean maximum amount of time a miscanthus crop can endure before wilting, while 60 days is the maximum before its rhizomes are killed and the crop has to be replanted. In addition to adequate rainfall, soil water holding capacity is important for high yields, especially in dry periods—in fact Roncucci et al. reports approximately two times better yield for miscanthus planted in silty clay loam compared to sandy loam soil (Italy) after a relatively normal growing season precipitation wise, and approximately six times better yield after a growing season containing severe drought.
|
|
1817 Ordnance Survey Map of Scratchbury Camp Scratchbury is on the edge of the chalk plateau of Salisbury Plain, and within the area of Norton Bavant Chalk Downland Edge, as described by the West Wiltshire Landscape Character Assessment. The hill has extensive views overlooking the Wylye valley to the south. The Salisbury Plain chalk massif is part of a system of chalk downlands throughout eastern and southern England formed by the rocks of the Chalk Group; the landscape is underlain by a combination of Lower, Middle and Upper Chalk supporting shallow well drained calcareous silty soils over chalk on slopes and crests. Escarpments are often formed where layers of chalk have been compressed to form a fold, or where the chalk has been faulted, resulting in accelerated erosion along the line of the weakness.
|
|
Richardson Bay mudflats show exposed layers of bay mud Bay mud consists of thick deposits of soft, unconsolidated silty clay, which is saturated with water; these soil layers are situated at the bottom of certain estuaries, which are normally in temperate regions that have experienced cyclical glacial cycles. Example locations are Cape Cod Bay, Chongming Dongtan Reserve in Shanghai, China, Banc d'Arguinpreserve in Mauritania, The Bristol Channel in the United Kingdom, Mandø Island in the Wadden Sea in Denmark, Florida Bay, San Francisco Bay, Bay of Fundy, Casco Bay, Penobscot Bay, and Morro Bay. Bay mud manifests low shear strength, high compressibility and low permeability, making it hazardous to build upon in seismically active regions like the San Francisco Bay Area. Typical bulk density of bay mud is approximately 1.3 grams per cubic centimetre.
|
|
Shortly after leaving the mountains, the Tongue River enters an area dominated by a thick layer of buff-colored sandstones and silty clay. This sedmintary layer is named the Tongue River Sandstone, because its outcrops are so predominant in the Tongue River basin.Map of the norther portion of the Tongue River Sandstone The Tongue River Sandstone is the youngest of three "members" which form the Fort Union Formation, the other two members being the Lebo Shale Member and the Tullock Member.Wyodak Coal, Tongue River Member of the Fort Union Formation, Powder River Basin, Wyoming, Mark Ashley, 2005 The buff-colored sandstones and shales of the Tongue River sandstone are visible all along the greater part of the Tongue River from Dayton, Wyoming to a point north of Ashland, Montana.
|
|
The California Development Company was formed in 1896 as a replacement for the defunct Colorado River Irrigation Company, which had been started a few years earlier for the purpose of planning an irrigation system for the lower Colorado Desert in California. The rich, silty soil of the area was found to be suitable for agriculture, but wells tapping groundwater brought up an inadequate supply of water for such a hot, arid region. The California Development Company took over the project of diverting Colorado River water into the Coachella and Imperial Valleys in the Salton Sink, a dry lake bed which today contains the Salton Sea, hoping to turn the desert green with agricultural fields. The first canals were being constructed by 1900 under the guidance of chief engineer George Chaffey.
|
|
Map showing the location of Panxian and Luoping during the Anisian (a), with stratigraphic position of Luoping Dinocephalosaurus (b) Subsequently, additional Dinocephalosaurus specimens were discovered from the slightly older Luoping locality, which has been dated to 245–244 million years old based on conodont biostratigraphy as well as preliminary radiometric dating. The specimens originate from bed 74 of the Luoping locality, in deposits located near the village of Dawazi, Luoping County, Yunnan, China. Bed 74 is part of a section composed of thin dark grey micritic limestone layers mixed with thicker layers of siliceous limestone and silty limestone, which extends downwards to bed 67. One particular specimen is notable for containing an embryo in its abdominal region, of which cervical vertebrae, forelimbs, and several other elements are preserved.
|
|
This species prefers freshwater lakes with soft, muddy or silty bottoms, reservoirs, slow- moving freshwater rivers, streams, paddy fields, and ponds with aquatic grass, creeping at the bottom of the water or on aquatic grasses. It prefers lentic water bodies with silt, sand, and mud substrate in eastern North America, although it can survive in slower regions of streams as well. It can tolerate conditions in stagnant waters near septic tanks. This species has been found in waters in eastern North America with pH 6.5–8.4, calcium concentration of 5–97 ppm, magnesium concentration of 13–31 ppm, oxygen concentration of 7–11 ppm, depths of 0.2–7mname= "Maine Divers LLC field data 2013" m, conductivity of 63–400 μmhos/cm, and sodium concentration of 2–49 ppm.
|
|
Opened in September 2015, the park features 2 dive trails as part of the Marine Conservation Action Plan to protect and enhance marine heritage and biodiversity in the area. The two circular dive trails are located at different depths, the Shallow Dive Trail where divers can observe giant clams, sea anemones and clown fishes circles around coral reef and sandy habitats is around 4 to 6 metres underwater, while the Deep Dive Trail features coral rubble and rocky and silty habitats at around 10 to 16 metres deep where divers can observe sea fans, sea stars and the Neptune's Cup Sponge. Underwater signboards are also located along each dive trail provides information on marine biodiversity in the area. There are also plans to build facilities in the big lagoon of Big Sister's island to allow access to intertidal areas.
|
|
Because of the direction of thrust is mostly in line with the diver, or slightly upwards, it is suitable for situations where disturbing the silt on the bottom can cause dramatic loss in visibility, such as inside wrecks and caves, and at any other time when the diver needs to swim close to a silty substrate. Some divers will use it as their standard kick even in more forgiving environments, as the resting position is identical for other kicks that increase underwater mobility, such as the backwards kick and the helicopter turn. The glide part of the stroke is essential for reasonable efficiency, so to be efficient frog kick requires good buoyancy control, and it is not efficient against a current. Basic frog kick is a stroke with wide action, and is unsuitable for use close to a wall or in narrow spaces.
|
|
These red "clinker" beds are often more resistant to erosion than the silty sandstone, so they appear on the higher parts of bluffs, and buttes on either side of the valleys of the Tongue River basin are often capped by beds of this baked and fused rock that are five to twenty feet thick. Besides the beds of reddish "clinker" larger concretions can be found that appear at first glance to be similar to melted glass or even pieces of volcanic rock. Although of a different appearance than the clinker these odd-looking concretions are also formed by the burning coal beds, with the difference in appearance being due to the difference in content of the material in the overlying bed that was heated to very high temperatures. The reddish "clinker" is crushed and used to surface roads throughout the Tongue River basin.
|
|
Map showing land reclamation since 1848 at the head of the harbour While Otago Harbour might have the appearance of an excellent deep-water port, it was not naturally suited to such a role, especially in the early days of settlement when ships needed to dock close to the city. The flat land at the southern end of the harbour and close to the isthmus of Otago Peninsula was ideally suited for a city (and was the site for Dunedin), but the harbour itself could naturally accommodate deep-drafted ships only as far as Port Chalmers. At Port Chalmers, two islands (Quarantine Island/Kamau Taurua and Goat Island) almost bisect the harbour. Beyond them, the harbour is shallow and silty, and mudflats are often visible at low tide.McLean, G. (2002) 100 Historic Places in New Zealand.
|
|
A geologist studies the Ashdown Formation on the East Sussex coast The upper Purbeck Group records a transition into more sand being delivered into the Weald basin. This has led to the deposition of a mixture of fine sands known as the Ashdown Formation, or Ashdown Beds, which along with the Wadhurst Clay and the Tunbridge Wells Sands compose the Hastings Beds. These strata underlie the county from the boundary with West Sussex at East Grinstead, through the Ashdown Forest to Hastings and Pett Level on the coast. A fossilised Iguanodon dinosaur footprint near Hastings The Ashdown Beds are the lowermost unit of the Hastings Beds and typically comprise siltstones and silty fine-grained sandstones with small amounts of finely-bedded mudstone and mudstone arranged in rhythmic units ("cyclothems") commonly divided by thin pebble beds as described by the British Geological Survey.
|
|
International Conference on Supplementary Irrigation and Drought Management, Bari, Italy Parameters of horizontal drainage Parameters of vertical drainage The subsurface field drainage systems consist of horizontal or slightly sloping channels made in the soil; they can be open ditches, trenches, filled with brushwood and a soil cap, filled with stones and a soil cap, buried pipe drains, tile drains, or mole drains, but they can also consist of a series of wells. Modern buried pipe drains often consist of corrugated, flexible, and perforated plastic (PE or PVC) pipe lines wrapped with an envelope or filter material to improve the permeability around the pipes and to prevent entry of soil particles, which is especially important in fine sandy and silty soils. The surround may consist of synthetic fibre (geotextile). The field drains (or laterals) discharge their water into the collector or main system either by gravity or by pumping.
|
|
The paratype material BP/1/5278 (originally assigned to Syntarsus rhodesiensis) was discovered in 1981, also at the Elliot Formation in pinkish-maroon silty mudstone that was deposited in Hettangian sediments. Both the holotype and paratype specimen were housed in the fossil collection of the Evolutionary Studies Institute, part of the School of Geosciences of the University of the Witwatersrand, in Johannesburg, South Africa. Unfortunately the cranial material house at the Evolutionary Studies Institute was lost and no new fossils of Dracovenator have currently been found. The genus name is a contraction of the Latin words draco meaning "dragon", and venator meaning "hunter"; thus, "dragon hunter". "Draco" refers to its discovery in the foothills of Drakensberg, which is "Dragon’s Mountain" in the Dutch language. The specific name, regenti, was named in the honor of the late Regent ‘Lucas’ Huma, who was Professor Kitching’s field assistant.
|
|
A fossilised Iguanodon dinosaur footprint near Hastings The Ashdown Beds are best exposed in the 8 km cliff section between Hastings and Pett Level. Part of this section has been designated a Site of Special Scientific Interest, cited by Natural England because of its geological importance. The cliffs between Hastings and Pett Level are difficult to get to safely because of the tidal range of the English Channel and the unstable cliffs. At this location the formation can be followed from the axis of the Wealden Anticline at Lee Ness Ledge through the well distinguished marker beds and horizons to its juncture with the Wadhurst Clay at Hastings Castle to the west and Cliff End to the east. The mottled heavily degraded silty clays of the former ‘Fairlight Clays’ can be easily distinguished against the well bedded sandstones and interbedded siltstones of the ‘Ashdown Sands’.
|
|
In the Bear Gulch Limestone, many genera of fossil fishes and some invertebrates were occasionally preserved in detail when they died and sank to the bottom of a shallow marine or estuarine lagoon. In such cases, conditions on the silty bottom preventing the usual bacterial decomposition are usually invoked, characterized as close to anoxic, thus suppressing ordinary bacterial decomposition; however, fossils of fishes of distinctly bottom-dwelling type are present, and traces of worm burrows or similar bottom disturbance show that sufficient oxygen was available in the upper levels of bottom silt. Pulses of hypoxic or anoxic conditions and perhaps periodic episodes of heavy siltation--the lagoon laid down up to 90 ft/30 m of limestone during its existence-- may have been involved. The numerous genera and many body types represented by fossils are witnesses to a highly diversified paleoecology with many available niches to be filled by specialist fauna.
|
|
Glauconite, a major component of greensand, is also a common source of potassium (K) in plant fertilizers and is also used to adjust soil pH. It is used for soil conditioning in both organic and nonorganic farming, whether as an unprocessed material (for mixing in at proper proportions) or as a feedstock in the synthesis of commercial fertilizer powders. In Brazil, greensand refers to a fertilizer produced from glauconitic siltstone, unit belonging to the Serra da Saudade Formation, Bambuí Group, of Neoproterozoic/Ediacaran age. The outcrops occur in the Serra da Saudade ridge, in the Alto Paranaíba region, Minas Gerais state. It is a silty-clayed sedimentary rock, laminated, bluish-green, composed of glauconite (40-80%), potassium feldspar (10-15%), quartz (10-60%), muscovite (5%) and minor quantities of biotite (2%), goethite (<1%), titanium and manganese oxides (<1%), barium phosphate and rare-earth element phosphates (<1%).
|
|
Huergo's plans to build a house at the mouth of the Riachuelo River flowing along Buenos Aires' industrial southside earned him the appointment of Director of the Riachuelo Works Bureau in 1876. This powerful post enabled him to develop the Port of La Boca, the first modern port in Buenos Aires. The port's opening in 1880 coincided with a sudden economic boom in Argentina, and the Provincial Legislature awarded him a generous budget for improvements, including a breakwater and the dredging of the silty Riachuelo mouth to 6.5 m (21 ft).Puerto Madero: history His ambitious proposal for a massive, new port north of the one at La Boca received initial support in the Argentine Congress, though the backing of Argentina's main financier (Barings Bank) for a proposal put forth by local import-export mogul Eduardo Madero helped sway congre ssional support away from Huergo's proposal.
|
|
While most fossils are associated with the plant debris beds, a notable exception is the "Hypsilophodon bed" present near the top of the formation, an up to 1 metre thick bed of silty red-green mudstone, with two separate horzions that have produced almost exclusively over a hundred complete and articulated skeletons of Hypsilophodon, sometimes even with preserved tail tendons. The bed is laterally extensive, being persistent for over a kilometre. It has been recently suggested that the accumulation of skeletons were a mass mortality event caused by a crevasse splay. Just above the "Hypsilophodon bed" the red mudstones of the Wessex Formation change to the transitional light coloured sandstone "White rock" and overlying laminatinated grey mudstones of the Vectis Formation, caused by the changing of environmental conditions from that of a floodplain to coastal lagoon conditions, caused by the early Aptian marine transgression.
|
|
Two options were considered when Bourassa unveiled his plan for the construction of several large hydroelectric power stations on the rivers flowing into James Bay, either on the Nottaway, Broadback, Rupert and Harricana Rivers in the south (NBR Project), or on the La Grande and Eastmain Rivers to the north. The northerly rivers were selected in May 1972, various studies conducted by engineering firms having concluded the La Grande option would be more cost effective, while having a lesser impact on forestry and would require less flooding, thus minimizing impacts on First Nations fishing and hunting. Another area of concern was the silty nature of the terrain in the NBR area, which would have complicated the damming. The project, as described at the time, would involve the construction of four generating stations on the La Grande River and the diversion of the Eastmain and Caniapiscau rivers into the La Grande watershed.
|
|
The type locality of the Espada Formation is in Hondo Canyon, near Point Arguello, as first described by Thomas Dibblee in his 1950 book on the geology of southwestern Santa Barbara County. While the unit is 1200 meters (4,000 feet) thick at the type locality, it is much thicker elsewhere; along the southern slope of the San Rafael Mountains it is exposed from its base to its top, where it is probably in conformable contact with the Jalama Formation, and the total thickness is around 5300 meters (16,000 feet) – 5 kilometers (three miles) of uninterrupted sedimentary deposition that took place over 50 million years. The formation throughout its geographic range consists of layer upon layer of well-bedded argillaceous silty to sandy shales, with smaller interbeds of arkosic sandstone. The shales are generally brown with a greenish tinge in fresh, unweathered exposures; upon weathering they develop a variety of colors.
|
|
The former has been entirely built by the Safid- rud, a river with a high discharge and a high alluvial content. The higher part is made out of coarse ancient alluvial material, whereas in the lower part, north of Astaneh-e Ashrafiyyeh, the river often changed its course through thin silty and clayey material; it has thus abandoned its former northeastward course, which flowed into the sea at the prominent angle of the plain near Dastak, and presently flows northwards and builds a smaller living delta jutting out into the Caspian between Zibakenar and Bandar kiashahr. The Fumanat plain to the west intermingles marine alluvial deposits and former sandy beach-lines with abundant alluvial deposits from the numerous rivers draining the southern part of Talesh highlands. They do not reach directly the sea, but converge into the lagoon of Anzali with a single outlet to the Caspian through the dune-covered sandy coastline.
|
|
Cape Fear, on the coast of North Carolina Cape Fear in a NASA satellite photo, showing the estuary of the Cape Fear River Cape Fear is a prominent headland jutting into the Atlantic Ocean from Bald Head Island on the coast of North Carolina in the southeastern United States. It is largely formed of barrier beaches and the silty outwash of the Cape Fear River as it drains the southeast coast of North Carolina through an estuary south of Wilmington. Cape Fear is formed by the intersection of two sweeping arcs of shifting, low-lying beach, the result of longshore currents which also form the treacherous, shifting Frying Pan Shoals, part of the Graveyard of the Atlantic. Dunes dominated by sea oats occur from the upper beach driftline back to the stable secondary dunes, where they mix with other grasses such as saltmeadow cordgrass and panic grass, as well as seaside goldenrod, spurge and other herbs to form a stable salt-tolerant grassland.
|
|
"This correlation was demonstrated at the low energy clayey tidal flats of Bohai Bay (China), the moderate environment of the Jiangsu coast (China) where the bottom material is silty, and the sandy flats of the high energy coast of The Wash (U.K.)." This research shows conclusive evidence for the null point theory existing on tidal flats with differing hydrodynamic energy levels and also on flats that are both erosional and accretional. Kirby R. (2002) takes this concept further explaining that the fines are suspended and reworked aerially offshore leaving behind lag deposits of the main bivalve and gastropod shells separated out from the finer substrate beneath, waves and currents then heap these deposits to form chenier ridges throughout the tidal zone, which tend to be forced up the foreshore profile but also along the foreshore. Cheniers can be found at any level on the foreshore and predominantly characterise an erosion-dominated regime.
|
|
This church is now a chapel of ease in the parish of Sywell with Overstone. OVERSTONE, about four miles from Northampton and just off the A43 road to Kettering is a long linear village with the church of ST NICHOLAS, built in 1807 and remodelled in 1903, standing in a field in Overstone Park a short walk from the village. The church constructed of Kingsthorpe Stone (grey sandstone with streaks of silty clay) was built by John Kipling and replaced the old dilapidated earlier one built at the beginning of the 13th century and situated further into the park in the deserted village of Overstone. During the medieval period of the 12th, 13th and 14th centuries Overstone village was a little further into the park beyond the current church. It was a village of ‘modest size’ and continued throughout the following centuries to be a small village owned by the resident Lord of the Manor.
|
|
The holotype and only specimen of Counillonia was discovered in the Purple Claystone Formation of the Luang Prabang Basin in northern Laos. This sedimentary unit mostly consists of purple silty- claystones mixed with layers of conglomerates and sandstone, as well as volcaniclastic sediments. Estimated dates for the age of the formation have ranged from the Late Permian to the Late Triassic or even the earliest Jurassic period. More recently, radiometric dating using U—Pb geochronology from detrital zircon has yielded a maximum age for deposition of 251.0 ± 1.4 Ma. It has been further suggested that mixing and reworking of the sediments implies that the actual depositional age of the formation is possibly even younger than this date, and so likely placing it in the Early Triassic. However, the reliability of this date was contested by Jun Liu in 2020, who argued that based on biostratigraphy the Purple Claystone Formation should instead be regarded as Late Permian in age, comparing Counillonia to dicynodonts found in the 255-253 million year old Daptocephalus Assemblage Zone of South Africa.
|
|
In late 1863, a joint project between the North British Railway and Edinburgh and Glasgow Railway, which would merge in 1865, appointed Stephenson and Toner to design a bridge for the Forth, but the commission was given to Bouch around six months later. It had proven difficult to engineer a suspension bridge that was able to carry railway traffic, and Thomas Bouch, engineer to the North British Railway (NBR) and Edinburgh and Glasgow Railway, was in 1863–1864 working on a single-track girder bridge crossing the Forth near Charlestown, where the river is around wide, but mostly relatively shallow. The promoters, however, were concerned about the ability to set foundations in the silty river bottom, as borings had gone as deep as into the mud without finding any rock, but Bouch conducted experiments to demonstrate that it was possible for the silt to support considerable weight. Experiments in late 1864 with weighted caissons achieved a pressure of on the silt, encouraging Bouch to continue with the design.
|
|
Much of the land appears to have come into the hands of the Hiltoft family, from whom it passed to Nicholas Saunderson, 1st Viscount Castleton following his marriage (in 1584) to Mildred, heiress of John Hiltoft of Boston.Kime (1986), p. 14.Watson and Sgroi (2010). Castleton enclosed 400 acres of saltmarsh in 1627; the formation of Gibraltar Point led to more land being reclaimed from the sea south of Skegness by Croft Marsh, and successive Lords Castleton were engaged in long disputes and legal claims over the ownership of the new lands, eventually acquiring land by the sea in 1681. The whole estate passed through the male line which became extinct in 1723 on the death of the 5th Viscount, who bequeathed his estate to his cousin Thomas Lumley; in 1740 Lumley became 3rd Earl of Scarbrough. By 1845, the Scarbrough estate comprised 1,219 acres at Skegness.Sedgwick (1970). The Lincolnshire marshland running alongside the coast from Wainfleet up to the Humber provided good pasture for sheep and cattle, especially in the silty, flat Outmarsh closest to the shore.
|
|