Alluvium

Alluvium- Soil, usually rich in minerals, deposited by water, as in a floodplain.

Definition as written by IA_Soil_Sci:
Alluvium. Unconsolidated material, such as gravel, sand, silt, clay, and various
mixtures of these, deposited on land by running water.
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Refers to soil that has no well developed profile with horizons, such as glacial deposits, dune sand, alluvium.
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