tacnode

(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) 受多次古构运动的影响，南江地区裂缝之间的关系较复杂，有切割、限制、互切共轭、追踪改等关系，形成了两期共6组构裂缝。