The Shulu subbasin lying in the southwestern part of the Jizhong depression is a typical single-downfaulted subbasin in an extensional system.

• 束鹿凹陷是冀中坳陷西南部的一个典型的伸展单断凹陷,构造格局简单,存在北东向伸展断裂系统和北西向横向调节带。