Qianmiqiao buried hill in Banqiao structural belt of Huanghua Depression 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。