摘要
阿尔泰地区在地质上不但以华力西期岛孤,广泛发育花岗岩、花岗伟晶岩及其稀有金属矿产资源而著称;而且还发育韧性剪切带,深、浅两种断裂,是一个巨型复式推覆-滑脱构造。它是在额尔齐斯俯冲带基础上发展起来的,主滑脱面位于中、上地壳之间约20km深处,地表额尔齐斯断裂带是这个主滑脱面上段。
The region of Altay is geologically well-known not only because of the island arc of Varisan Period, the widly distributed granites, granite pegmatites and rare metal mineral resources but also ductile shear zones and both deep and shallow faults. It is a mega-complex nappe-gliding structure and based on the Irtys Subduction Zone. The major gliding level lies 20 kilometers deep between upper and middle earth's crust. The surface of Irtys Fault Zone is the upper part of the major gliding level.
关键词
韧性
剪切带
推覆构造
滑脱构造
Altay
Irtys Fault Zone
ductile shear zone
nappe-gliding structure
major gliding level
