alluvial flat

alluvial flat
    a) (colloquial: western USA)
   A nearly level, graded, alluvial surface in bolsons and semi-bolsons that lacks distinct channels, terraces, or flood plain levels.
   FFP, GG, & SW.
    b) (not preferred)
   A general term for a small flood plain bordering a river, on which alluvium is deposited during floods.
   GG

Glossary of landform and geologic terms. 2013.

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  • alluvial plain — noun a flat resulting from repeated deposits of alluvial material by running water • Syn: ↑alluvial flat • Hypernyms: ↑flat * * * noun 1. : a level or gently sloping flat or a slightly undulating land surface resulting from extensive deposition… …   Useful english dictionary

  • alluvial plain —     a) A large assemblage of fluvial landforms (braided streams, terraces, etc.,) that form low gradient, regional ramps along the flanks of mountains and extend great distances from their sources (e.g., High Plains of North America.    SW.… …   Glossary of landform and geologic terms

  • Alluvial plain — An alluvial plain is a relatively flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. A floodplain is part of the process, being the… …   Wikipedia

  • alluvial cone — noun a fan shaped deposit where a fast flowing stream flattens out • Syn: ↑alluvial fan • Hypernyms: ↑geological phenomenon * * * noun : an alluvial fan with steep slopes * * * alluvial fan or alluvial cone …   Useful english dictionary

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