辽南庄河地区夹河山韧性剪切带构造特征及其大陆动力学背景  

Tectonic features and continental dynamic background of the Jiaheshan ductile shear zone in the Zhuanghe area,southern Liaoning YU Haifeng

作　　者：于海峰 董万德 何振清 郝永利 

机构地区：[1]辽宁地质矿产调查院大连分院,辽宁大连116100

出　　处：《地质通报》2002年第7期392-396,共5页Geological Bulletin of China

基　　金：国土资源部1:5万庄河市幅等4幅区调联测项目(编号:J4.1.7-3)部分成果。

摘　　要：辽南庄河地区的夹河山韧性剪切带发育于晚三叠世—早侏罗世花岗岩岩体中,通过对其几何学、运动学、动力学及质量平衡分析等方面的研究后认为,该剪切带为自NWW向SEE运动的近水平伸展型正剪切带,形成于早燕山期,与Izanagi板块向中国东部挤压过程中因应力松弛导致的后造山伸展作用有关。The Jiaheshan ductile shear zone in the Zhuanghe area,south ern Liaoning,occurs in a Late Triassic-Early Jurassic granite body.Geometric,kinematic,and dynamic studies and mass-balance analysis suggest that the shear zone is a normal ductile shear zone of subhorizontally exten sional type that moves from WNW to ESE.It formed in the early Yanshanian by post-orogenic exten sion due to stress relaxing caused by the compression of the Izanagi plate toward eastern China.

关 键 词：大陆动力学 庄河地区 早燕山期 近水平韧性剪切带 伸展作用 辽宁 

分 类 号：P542.3[天文地球—构造地质学] P541[天文地球—地质学]