正反转构造动力学成因探讨

Discussion on Dynamic Genesis of Positive Inversion Structure

反转构造是指构造变形作用发生反向变化所产生的与前期构造性质相反的一种叠加构造,分为正反转构造和负反转构造两种类型。绝大多数正反转构造产生于张性盆地演化的反转期,即应力场转变为压应力场的时期。研究认为,张性盆地反转的动力机制有主动反转作用和被动反转作用两种,因此,依据反转的动力机制,将正反转构造划分为主动正反转构造和被动正反转构造。

Inversion structure was a superimposed structure,which was caused by reactivation of extension structure inherited from an earlier phase of crustal extension in compression,and was divided into 2 types;positive inversion and negative inversion structures.Most of positive-inversion structures occur during inversion phase of extension basin.There are active and passive dynamic mechanisms during extension basin inversion.Positive inversion structures are classified as active and positive-inversion structures and passive positive-inversion structures by dynamic mechanisms of positive basin inversion.