河南境内北秦岭构造带EW向地质特征差异及成因分析

河南省境内北秦岭构造带在EW向存在明显的地质差异,主要表现在自W向E构造层次加深、岩石变质程度变深、矿产组合由复杂到单调。其形成原因主要有板块敛合时渐次碰撞因素、逆冲推覆构造运动的影响和后期断裂造成的地层升降作用。

The deference between west and east part of north Qinling structure zone in Henan province and its genesis

There is obvious geological difference existing between west part and east part of north Qinling structure zone in Henan province,mainly showing the characteristics of structures of different grades highly developed eastwardly while metamorphism also strengthened and mineral assemblages became more complicated in same orientation.The main reasons for all those phenomena are gradual collision,impact of obduction nappe structure movement and stratum rising and falling caused by late developed fractures.