Using the concepts of rocks, we got that sand and clays are two sizes of sedimentary grains that are least likely to be deposited when water is flowing fast.
Sediments are the solid fragments of inorganic or organic material that come from the weathering of the rock and soil erosion, and are carried and deposited by wind, water, or ice. They range in the size from large blocks to microscopic particles. It shows technical definition of sediment particles. However, in general usage is as follows ranging from the largest to the smallest: boulders, cobbles, gravel, sand, silt, and clays.
Sediments actually form from the disintegration of rocks. They are transported, mostly by the water, and in the process the fragments are abraded, with the sharp edges worn down and the overall shape of particles increasing in roundness. Sediments actually derived from erosion on land are mostly Lithogenous sediments.
Hence, the two sizes of sedimentary grains are least likely to be deposited when water is flowing fast are sand and clays.
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