Foreland thrusting towards Yangtze craton started in Latinian stage,thus resulting in fault bended fold trap,fault propagated fold trap,step thrust lithologic trap,basal detachment trap,the subducted belt fold trap in nappe front.

• 前陆逆冲作用从拉丁期开始 ,以前置式的方式向扬子克拉通推覆 ,形成了断弯褶皱圈闭、断展褶皱圈闭、台阶状逆冲断层及岩性圈闭、基底折离圈闭、推覆带前缘传播消减带褶皱圈闭等多种圈闭类型。