Qianmiqiao buried hill in Banqiao structural belt of HuanghuaDepression was formed by stretch-faulting on the basis of fold-obduction.

• 千米桥潜山构造位于黄骅坳陷北大港构造带，千米桥潜山构造是在中生代的褶皱-逆冲作用的基础上经历伸展正断作用后形成的。