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Alluvium

"Alluvial" redirects here. Not to be confused with Alluvial (horse) or Alluvial diagram.
Alluvium and adjacent constituents
Alluvium deposits in the Gamtoos Valley in South Africa
An alluvial plain in Red Rock Canyon State Park (California)
Alluvial river deposits in the Amazon Basin, near Autazes, AM, Brazil. The seasonal deposits are extremely fertile and crucial to subsistence farming in the Amazon Basin along the river banks.

Alluvium (from Latin alluvius, from alluere 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings.[1][2][3] Alluvium is also sometimes called alluvial deposit.[4][5] Alluvium is typically geologically young and is not consolidated into solid rock. Sediments deposited underwater, in seas, estuaries, lakes, or ponds, are not described as alluvium.[1] Floodplain alluvium can be highly fertile, and supported some of the earliest human civilizations.[6]

  1. ^ a b Jackson, Julia A., ed. (1997). "alluvium". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
  2. ^ Glossary of Geological Terms. Geotech.org. Retrieved on 2012-02-12.
  3. ^ Geology Dictionary – Alluvial, Aquiclude, Arkose. Geology.Com. Retrieved on 2012-02-12.
  4. ^ Jackson, Julia A., ed. (1997). "alluvial deposit". Glossary of geology (Fourth ed.). Alexandria, Virginia: American Geological Institute. ISBN 0922152349.
  5. ^ Allaby, Michael (2013). "alluvium". A dictionary of geology and earth sciences (Fourth ed.). Oxford: Oxford University Press. ISBN 9780199653065.
  6. ^ Kidder, Tristram; Liu, Haiwang; Xu, Qinghai; Li, Minglin (July 2012). "The Alluvial Geoarchaeology of the Sanyangzhuang Site on the Yellow River Floodplain, Henan Province, China: THE YELLOW RIVER FLOODPLAIN, HENAN PROVINCE". Geoarchaeology. 27 (4): 324–343. doi:10.1002/gea.21411. S2CID 140587757.

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