The S-N trench tectonics in ore areas is based on the branches of thrust faults by stress expanding and form ore-bearing structures at the same time.

• 矿区的南-北向构造系统是在先存的北西-南东向构造基础上，随着推覆构造应力扩展新产生的分支断裂，同时局部形成张性空间，成为容矿构造。