Question

What is the deposition of river sediment along the foot hill

Answer 1

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Alluvial cones are formed when the slope of hill or mountain front through which the stream descends is steep so that debris collect at the foot of the hills. ... Secondly, the alluvial fans grow in height because of gradual deposition of debris upon debris.

Answer 2

Sediment in rivers gets deposited as the river slows down. Larger, heavier particles like pebbles and sand are deposited first, whilst the lighter silt and clay only settle if the water is almost still. ... When a river reaches a lake or the sea, it quickly deposits much of its sediment.



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