摘要
位于祁连造山带东段的白银地区 ,在 1∶ 5万区域地质调查中发现了两条近乎平行排列的北北东向韧性剪切带 ,据几何形态和显微组构特征 ,该剪切带均属于右行走滑韧性剪切带 ,是加里东末期祁连造山带与秦岭造山带呈反“S”型拼接的产物 ,区内在构造 -岩浆作用下 。
In the eastern Oilian orogenic belt of Baiyin area,Gansu,we discovered two NNE directive ductile shear zones that ranges parallelly through 1∶50000 geological mapping According to the characteristic of geometric conformation and microscopic fabric,it is suggested that zones are right lateral strike slip shear and opposite 'S' suture progeny formed by oblique collisions of Qilian and Qinling orogenic belt at terminal Caledonian At the effect of structure and magmatite in this district,it finally formed by strike slip of different continental blocks
出处
《西北地质》
CAS
CSCD
2002年第3期53-58,共6页
Northwestern Geology
基金
1: 5万青城乡幅
金崖乡幅区调成果
