The grained Carbonate rocks of Qianjiang Formation in Qianjiang Sag can be divided into oolitic limestone,sand-clastic limestone,mud-crystal sand-clastic dolomite,alga-gobbet limestone etc.

• 潜江凹陷潜江组粒屑碳酸盐岩性主要发育鲕粒石灰岩、砂屑灰岩、泥晶砂屑云岩、藻团块灰岩等。