新疆西准噶尔达尔布特断裂构造特征及演化  

Tectonic Characteristics and Evolution of Darbuti Fault in West Junggar,Xinjiang

作　　者：杜勇 王国灿[3,4] 晏文博 杨习俊 叶修锋 Du Yong;Wang Guocan;Yan Wenbo;Yang Xijun;Ye Xiufeng(The 8th Geological Brigade,Xinjiang Geological and Mineral Exploration and Development Bureau,Aksu,Xinjiang,843000,China;Kuqa Natural Resources Bureau,Kuqa,Xinjiang,842000,China;School of Earth Sciences,China University of Geosciences,Wuhan,Hubei,430074,China;National Key Laboratory of Geological Process and Mineral Resources,China University of Geosciences,Wuhan,Hubei,430074,China)

机构地区：[1]新疆地质矿产勘查开发局第八地质大队,新疆阿克苏843000 [2]库车市自然资源局,新疆库车842000 [3]中国地质大学地球科学学院,湖北武汉430074 [4]中国地质大学地质过程与矿产资源国家重点实验室,湖北武汉430074

出　　处：《新疆地质》2023年第1期14-18,共5页Xinjiang Geology

基　　金：中国地质调查局项目西准噶尔克拉玛依后山地区深部地质调查试点(1212011220245);新疆1∶25万铁厂沟镇幅(L45C002001)与克拉玛依市幅(L45C003001)区调修测项目(1212011120505)联合资助。

摘　　要：达尔布特断裂是西准噶尔地区规模最大的左行走滑正断层,通过对研究区大量地质调查成果分析总结,判定达尔布特断裂基本形成于晚石炭世晚期—早二叠世,并在二叠纪强烈活动形成规模。据断裂两侧错移的哈拉阿拉特组和碱性长石花岗岩岩体作为被切割地质体标志,估算出达尔布特断裂总滑移量为57.54~115.56 km。总结认为达尔布特断裂形成演化经历了碰撞俯冲、碰撞后伸展、碰撞后陆内挤压、碰撞后伸展4个阶段。Darbout fault is the largest left lateral strike slip normal fault in the western Junggar area.Based on the analy-sis and summary of a large number of geological survey results in the study area,this paper determines that Darbout fault was basically formed in the late Late Carboniferous Early Permian,and formed a scale of intense activity in the Permian;According to the Halarat Formation and alkaline feldspar granite on both sides of the fault,which are dislocated,as the indicators of the cut geological body,the total slip amount of Darbout fault is estimated to be 57.54~115.56km;It is concluded that the formation and evolution of the Darbout fault has experienced four stages:collision subduction,post collision extension,post collision intracontinental compression and post collision extension.

关 键 词：达尔布特断裂 左行走滑 滑移量 形成演化 

分 类 号：P54[天文地球—构造地质学] O346.1[天文地球—地质学]