End Late Paleozoic tectonic stress field in the southern edge of Junggar Basin  

作　　者：Wei Ju Guiting Hou Le Li Fangfeng Xiao 

机构地区：[1]The Key Laboratory of Orogenic Belts and Crustal Ew~lution, Ministry of Education, School of Earth and Space Science, PekingUniversity, Beijing 100871, China [2]Institute of Oil and Gas Research, Peking University, Beijing 100871, China

出　　处：《Geoscience Frontiers》2012年第5期707-715,共9页地学前缘（英文版）

基　　金：supported by the National Natural Science Foundation of China Grant(Nos.40772121,40314141 and 40172066);China National Project 973(No.2009CB219302)

摘　　要：This paper presents the end Late Paleozoic tectonic stress field in the southern edge of Junggar Basin by interpreting stress-response structures （dykes, folds, faults with slickenside and conjugate joints）. The direction of the maximum principal stress axes is interpreted to be NW-SE （about 325°）, and the accommodated motion among plates is assigned as the driving force of this tectonic stress field. The average value of the stress index Rt is about 2.09, which indicates a variation from strike-slip to compressive tectonic stress regime in the study area during the end Late Paleozoic period. The reconstruction of the tectonic field in the southern edge of Junggar Basin provides insights into the tectonic deformation processes around the southern Junggar Basin and contributes to the further understanding of basin evolution and tectonic settings during the culmination of the Paleo- zoic.This paper presents the end Late Paleozoic tectonic stress field in the southern edge of Junggar Basin by interpreting stress-response structures （dykes, folds, faults with slickenside and conjugate joints）. The direction of the maximum principal stress axes is interpreted to be NW-SE （about 325°）, and the accommodated motion among plates is assigned as the driving force of this tectonic stress field. The average value of the stress index Rt is about 2.09, which indicates a variation from strike-slip to compressive tectonic stress regime in the study area during the end Late Paleozoic period. The reconstruction of the tectonic field in the southern edge of Junggar Basin provides insights into the tectonic deformation processes around the southern Junggar Basin and contributes to the further understanding of basin evolution and tectonic settings during the culmination of the Paleo- zoic.

关 键 词：Tectonic stress field Junggar Basin End Late Paleozoic Stress-response structures Stress regime 

分 类 号：P554[天文地球—构造地质学] TE122.3[天文地球—地质学]