(4) The palaeotectonic movements resulted in the complicate stages of fractures, the relations between fractures were cutting, confinement, tacnode and so on, and formed 2 types 6 groups fractures.

(4) 受多次古构造运动影响，南江地区裂缝关较，有切割、限制、互切共轭、追踪改造等关，形成了两期共6组构造裂缝。