alluvium

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alluvium

The material deposited on land by virtue of the process of accretion. The accretion process occurs when rivers or other waters deposit silt and mud on land,and thus create more land; the silt and mud making up the new land is called alluvium.

References in periodicals archive ?
note an alluviation event in the Argive Plain in the later Neolithic, (21) while Zangger et al.
The erosion and alluviation generated by over a millennium of earthmoving would have expanded the shoreline and formed highly productive wetlands long before the archaeological record indicates abandonment of the interior districts.
This climatic transition is manifested in paleoecological records by rising lake levels, dune stabilization, partial melting of permafrost in lowland sites, increased alluviation and hillslope erosion, and accumulation of soil organics (peat).
In contrast, the Rio Maranon carries a substantial load of clayey sediment which results in a more fertile floodplain due to greater alluviation compared to that of the Negro.