摘要
在东秦岭造山带核部已识别出3套韧性剪切系统,即元古代近水平韧性剪切系统、军马河—马蹄湾韧性推覆剪切系统及网结状走滑型韧性剪切系统。由它们所代表的线性强应变带与包容其中的透镜状弱应变域的规律组合、是造山带核部的基本构造样式。对各韧性剪切系统的几何学、运动学和动力学特点、岩相学和显微构造特征以及形成环境和发育序列的研究表明,它们代表了东秦岭造山带核部形成和演化过程中在不同尺度上的构造软化带或应变局部化带。
Three types of ductile shear systems have been recognized in the core of the Eastern Qinling orogenic belt,i.e. the Proterozoic near horizontal type, Junmahe-Matiwan overthrust type and strike-slip type. The geometry, kinematics,dynamics, petrography, microstructure, deformation conditions and the deformational history of ductile shear systems have been studied. It is suggesed that the ductile shear systems represent the tectonic softening or strain localized zones on different scales in the formation and evolution stages of the Oinling core complex.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第6期597-606,共10页
Earth Science-Journal of China University of Geosciences
关键词
造山带
核部
韧性
剪切系统
东秦岭
Eastern Qinling, the core of orogenic belt, ductile shear system,tectonic softening zone.
