The development of algae laminae greatly enhances the hydrocarbon-generating ability of source rocks in the research area and is one of important reasons why the source rocks are heterogeneous.

• 酒西拗陷下白垩统纹层状泥质白云岩和白云质泥岩中藻纹层十分发育,主要由浮游藻类及其降解产物组成。