Bangkok is surrounded by a vast, damp, alluvial plain, crisscrossed by network of klong.

曼谷为一个广阔潮湿的冲积平原所环绕，有纵横交错的运河网。

The farmers found the alluvial deposits at the mouth of the river very fertile.

农民发现这条河口底下的沉积物很肥沃。

After rapid overall swelling , in the late stage occurred alluvial fan-braided river facies sedimentary cycles made of red polyterrigenous molasse deposit s with multi-source supplying.

晚期全台升，形成冲积扇～辫状河相的磨拉石红复陆屑沉积旋回及多物源供应格局。

Four alluvial deposits distributing along Yuanjiang river and the diamondiferous rocks that supply diamonds to these placer deposits have striking properties of varied sources and multi-phases.

沅水布4个金刚石砂矿床，供给金刚石砂矿的含金刚石岩体具多期多源特点。

The sedimentary facies in Heshilafu is an alluvial fan - fan delta -lake systetn, and it can be further devided into several parfacies including microfacies.

和什拉甫地沉积相类型为冲积扇──扇三角洲──湖泊沉积体系，进一步为几种亚相类型和微相类型。

In loessal regions and alluvial valley fills of the western United States, both surface soil and subsoil are commonly friable.

在美国西部黄土和冲积河谷里，表土和底土一般是容易破碎的。

Mainly developed are fan - delta, deep lake turbidite and calcirudite deposit, and also alluvial fan deposit in early period.

各时期形成的砂岩和粒屑灰岩储集体,为油气储集提供了有利的场所。