siltstone

Bentonitic siltstone and bentonite-carbonate rock sedimentary deposit are aggraded as the top of Laogonggou stratum;

顶套滨浅湖的膨润土岩-膨润土-碳酸盐岩沉积岩石组合。

The platform foreslope is composed of the dark grey and celadon calcareous mudstone,siltstone,sandstone intercalated with limestone conglo...

内陆棚以深灰、灰绿色灰质泥岩夹浅灰色质、灰质纹层或条带特征,并编制了该地区桑塔木组的岩古地理图。