Because the velocity of sediment settling (deposition)is positively related to grain size for waterborne sediments,fluvial deposits are more likely than glacial deposits to

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Fluvial deposits are typically well sorted because the velocity of water flow determines which grain sizes are deposited at different locations. Larger grains settle out in faster-moving water, while finer grains are carried further and settle in slower-moving water, leading to a natural sorting process. Glacial deposits, on the other hand, are often poorly sorted because the ice can carry a wide range of grain sizes together and deposit them as a mixed load when it melts.

Because the Velocity of Sediment Settling (Deposition)is Positively Related to Grain