boulder clay是什么意思

用法例句

There are two types of fractures in the muddy gravel and the tuffaceous dolomite in Qingxi oilfield,Jiuquan Basin.

甘肃酒泉盆地青西油田泥砾岩相和泥云岩相储层中发育两种裂缝系统。

The secondary pores and fractures constitute the major storage space and percolation path in muddy gravels in Kulongshan oilfield,Jiuquan Basin.

酒泉盆地青西油田泥砾岩储层中发育的次生孔隙和裂缝系统构成了油藏主要储集空间和渗流通道。

Hycinth bean shaped tectonic mudstone conglomerate has been formed on the certain positions of the roof and the footwall in the quartz vein because of the late tectonic activity.

石英脉经过后期构造活动，顶底板一定位置形成扁豆体状构造泥砾岩，长期的氧化淋滤，石英脉中的金发生迁移，在构造泥砾岩中发生次生富集，形成金的富矿体。