alluvial deposit

同根派生

This saphire deposit is occurred in the Holocene alluvium.
礦床賦存于全新統(tǒng)沖積層。
Reportedly, the site is mainly underlain by alluvial deposits of Quaternary Age comprising sand and clay.
據(jù)報(bào)道，站點(diǎn)由主要強(qiáng)調(diào)包括沙子和黏土的四個(gè)一組的年齡沖積層。
The Green River Formation of Colorado, Wyoming, and Utah contains alluvial fan deposits and playa evaporites created in a huge lake whose level fluctuated for millions of years.
科羅拉多，懷俄明州和猶他州的綠色河形成含有扇形沖積物和在一個(gè)長(zhǎng)達(dá)數(shù)百萬(wàn)年水面漲落的巨大湖中產(chǎn)生的沙漠盆地蒸發(fā)鹽。