On a floodplain,the sediment grains away from the main river channel are
A)coarse-grained sand and gravels.
B)fine-grained silts and clays.
C)well-sorted and well-rounded sand particles.
D)all of these

Question

Quizplus · Accepted Answer

Fine-grained silts and clays settle out of suspension more readily than coarse-grained material, which is carried further downstream by the current. Therefore, sediment away from the main river channel on a floodplain is usually composed of fine-grained silts and clays.

On a Floodplain,the Sediment Grains Away from the Main River