The column of salt and gypsum rock that are interbeded with black mudstone are developed 3(superscript rd)-4(superscript th) sub-member of Shaheje Formation of Lower Tertiary in Dongpu Depression.

• 摘要在求濮凹陷下第三系沙三段发育暗色泥岩与盐岩和膏盐岩的频繁互层沉积，暗色泥岩为深水成因。