Stream Systems

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Slide 1

´╗┐Stream Systems Four sorts, plaited, wandering, anastamosing and straight

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Grand Canyon, disintegration

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River cut in Indus Suture Zone

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River sorts

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Links amongst sinuosity and slant

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Anastomosing waterway stratigraphy

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Braided streams Typically created in bumpy territory on higher angles. Exemplified by high level of regularity. Perpetual channels with swell crossed had relations with sands create amid times of low stream. These channels wander between sand bars that are dynamic just amid surge arrange, these create bigger scale cross beds. Dregs are normally sandy and pebbly, generally direct to very much sorted, texturally respectably develop. Old illustration Devonian Old Red Sandstone. Cutting edge case - Saskatchewan River.

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Braided River Model

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Braided River Model and stratigraphy

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Braided River

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Braided geometry, Matanuksa River, Alaska

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Braided River, Nubra, India

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Braided River, Shyok River, India

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Anastomosing River, Indian foreland

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Channel sandstone facies

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Meandering Rivers Typically created in waterfront plain zones, bring down inclination. More constant stream, better grained dregs than twisted. Channel silt is set apart by the profound stream movement of winds and the development of cross covered sands on point bars in the inward curves of wanders. Channels are isolated by levees from surge fields that are contained better grained muds and sands saved after rupture of levee amid surge arrange, generally vegetated. Surge stage can prompt to cut-off of winds and achievement of stream.

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Meandering Rivers, contd. Deserted wanders get to be Ox-bow lakes, filled by dirts. Winding waterway stores exemplified by fining-upward stratigraphy. Residue are regularly sandy, silty and clayey. Very much sorted. Sandstones shape disengaged diverts in better foundation. Old illustration Jurassic, Brent Group of North Sea. Cutting edge case - Brazos and Mississippi Rivers .

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Meanders in the Amazon Basin

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McKenzie River wanders and frigid lakes

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Ox Bow Lake/winds

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Point bar stores

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Braided as opposed to winding stream sort segments

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Impact of sinuosity on stratigraphy

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Channel movement Ganges

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Ganges and Himalaya push front

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Indus River and structural inspire, Kohat Plateau

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Effect of tectonism on area of waterways

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Fluvial facies cases

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Indus Molasse, fluvial sandstone

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Slumped silt, current Indus River

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Climbing wave swells, Indus River