山西中条山铜矿区的剥离断层

Denudational Fault in Copper Ore District Zhongtiao Mountain,Shanxi Province,China

通过对山西中条山铜矿区进行详细构造测量和显微构造观察，认为中条山地区早、中元古代经历了多期变形的叠加改造。三期伸展构造分别标志着剥离断层在地壳不同构造层次上的特征。在深部构造层次上表现为近水平的韧性剪切带；在中部构造层次以脆─韧性变形过渡性为标志；在浅部构造层次上以碎裂带及高角度正断层为主。

Based on the field geological structure mapping,carefully observation of microstructure,in the copper mine of Zhongtiao Mountain,Shanxi,Zhongtiao group has experienced multiple deformations in early - middle Proterozoic era. The three episode extensional structures were the features of the denudational fault in the different level of the crust. The subhorizontal shear zone exists in the deep structural level; in the middle level,we can see mylonite to microbreccia;and in the more shallow level,has a series of breccia and high angle normal faults.