And Qinglinkou and Zhongba shows a shallow imbricate structure of late Triassic and a blind fault-bend fold or fault-propagation fold which may be created or altered in the Cenozoic.

• 深层是新生代形成的多个逆冲岩片叠置所构成的隐伏堆垛背斜；南部的青林口和中坝构造主体表现为叠瓦状逆冲，前锋构造是断层转折褶皱和断层传播褶皱。