沖ちゅう積せき

noun, noun which may take the genitive case particle 'no'

alluvial

Geological term referring to soil, deposits, or land formed by river action. Often used in compounds like 沖積層 (alluvium) or 沖積平野 (alluvial plain).

• この地ち域いきの沖ちゅう積せき平へい野やは農のう業ぎょうに適てきしている。

  The alluvial plain in this region is suitable for agriculture.