The area has undergone six stages of tectonic deformation with the second episode of Caledonian Movement (D_2) and the fifth episode of Himalayan Movement (D_5) as the most important ones.

• 该区经历了六个构造形变期,以相当于主加里东期的第二期(D_2)与喜马拉雅期的第五期(D_5)形变期最为重要。