东营凹陷沙河街组泥页岩中正丙基胆甾烷与异海绵烷的研究：硫循环对有机质富集的影响

许汇源,侯读杰,刘全有

Study on n⁃propylcholestane and isorenieratane in the Shahejie black shales： Sulfur control on organic matter enrichment

Huiyuan Xu,Dujie Hou,Simon C George,Quanyou Liu

图2 东营凹陷地层柱状图（古环境据文献[6]）

Fig.2 Stratigraphic column fo the Dongying Depression (Palaeoenvironment after ref.[6])