The sequence Ⅲ represents the mid-submember sedimentation of Member Ⅲ of Shahejie Formation and has similar nature ofthe层序Ⅲ代表沙三段中亚段沉积，与层序Ⅱ有类似特征。
The upper submember of the third member and the lower submember of the second member of the Palaeogene Shahejie Formatio层序的发育主要受控于幕式断陷作用，可进一步划分出低位体系域、湖侵体系域和高位体系域。