Though the two are similar, robo-analysts typically deep-dive into SEC filings to analyze companies' finances, while robo-advisers tend to perform more coarse-grained tasks like determining and communicating asset allocation strategies based on questionnaires they carry out with investors.
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On the southern side of the rising Montsec, the Àger Basin, a similar fluvial system developed with a far more coarse-grained sandy character than in its northern counterpart around Tremp. The paleocurrents in the Àger Basin were towards the north and northwest.Gómez, 2015, p.9 The enclosed continental basin turned into a more coastal environment at a transgressional phase with smaller channels where oncolites were laid down.
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From this point upwards, the more distinct fluvial channels are present in abundance. These are primarily fine grained sandstone with infill of more coarse grained material. Interbedded mudstone and shale layers become compressed by the overlying sediments and these compress to become load structures. The channels contain finely laminated mud clasts that have been carried through, and due to being softer sediments, these have preferentially weathered leaving behind imprints of where they once lay.
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The Upper Walton soon gives way, by the point the creek receives Giant Ledge Stream, to the Lower Walton, with fine-grained sandstone and some gray shale. This layer remains the Esopus's bedrock all the way to the Bushnellsville Creek confluence. At that point the Oneonta Formation takes over for the rest of the upper Esopus. The Oneonta's bedrock is more coarse-grained cross-bedded lighter gray sandstone with some red shale beds.
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Outcrops near Cadomin, Alberta are the type locality. The formation is exposed at the surface in the foothills of the Canadian Rockies, extending from the Canada–US border in southeastern British Columbia and southwestern Alberta and to the Peace River region in northeastern British Columbia, a distance of more than . It is also recognizable in the subsurface east of the foothills. It ranges in thickness from to more than and is generally thicker and more coarse grained in the west.
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When vesicles make up a substantial fraction of the volume of the rock, the rock is described as scoria.Blatt and Tracy 1996, pp.27, 42-44 The term basalt is at times applied to shallow intrusive rocks with a composition typical of basalt, but rocks of this composition with a phaneritic (coarser) groundmass are more properly referred to as diabase (also called dolerite) or, when more coarse-grained (crystals over 2 mm across), as gabbro. Diabase and gabbro are thus the hypabyssal and plutonic equivalents of basalt.
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The Gilbert River Formation consists of paraconglomerate litharenite layers. In the lower part of the formation flaser cross bedding in fine grained sandstone is found in abundance, however a little further up the system becomes awash with volcanic and chert clasts typical of alluvial debris. These then are buried underneath fine grained material once more until a significant occurrence of fining upwards in thin layers shows a sharp change in depositional environment. The formation proceeds to become much more coarse grained and large, pebble to cobble sized clasts are enclosed.
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Cryosuction is the concept of negative pressure in freezing soil resulting from transformation of liquid water to ice in the soil pores whereby water migrates through soil pores to the freezing zone (through capillary action). Fine-grained soils such as clays and silts enables greater negative pressures than more coarse-grained soils due to the smaller pore size. In periglacial environments, this mechanism is highly significant and it is the predominant process in ice lens formation in permafrost areas. Several models for ice-lens formation by cryosuction exist, among others the Hydrodynamic model and the Pre-melting model, many of them based on the Clausius–Clapeyron relation with various assumptions, yielding cryosuction potentials of 11 to 12 atm per degree Celsius below zero depending on pore size.
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