东昆仑祁漫塔格虎头崖铜多金属矿田构造应力场分析  

Analysis of the Tectonic Stress Field in Hutouya Copper Polymetallic Ore Field,Qimantage of East Kunlun

作　　者：刘渭 杨兴科[2] 江万[3] 何虎军[2] 王鲲鹏 于恒斌 马晓鹏 LIU Wei;YANG Xingke;JIANG Wan;HE Hujun;WANG Kunpeng;YU Hengbin;MA Xiaopeng(Xinjiang Qingyuan Geren Geothernal Energy Engineering Co, LTD Changji 831100, Xinjiang, China;School of Earth Science and Resources, Chang'an University, Xi'an 710054,Shaanxi, China;Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081,China;Shaanxi Nuclear Industry Group Geological Survey Co, ltd, Xi'an 710199, Shaanxi, China;Shaanxi Mineral Resources and Geological Survey, Xi'an 710061, Shaanxi, China)

机构地区：[1]新疆庆源格仁地热能工程有限公司,新疆昌吉831100 [2]长安大学地球科学与资源学院,陕西西安710054 [3]中国地质科学院地质力学研究所,北京100081 [4]中陕核工业集团地质调查院有限公司,陕西西安710199 [5]陕西省矿产地质调查中心,陕西西安710061

出　　处：《西北地质》2021年第4期100-112,共13页Northwestern Geology

基　　金：中国地质调查局工作项目“青海祁漫塔格地区矿田构造研究”(1212011220937)资助。

摘　　要：基于近年来东昆仑祁漫塔格地区在找矿工作中遇到的问题,开展矿田构造的研究为深部及外围找矿提供依据已经迫在眉睫。在本次矿田构造研究中,选取构造发育的虎头崖矿田进行构造应力场的分析,利用野外地质分析和区域构造解析法、矿田断裂构造解析、节理统计分析法、共轭剪节理分析法、化石应变测量统计分析以及韧性变形分析等,首次对区内各断裂、节理及韧性变形带的构造应力场进行研究,厘定出成矿前、成矿期和成矿期后的3期次,共8个阶段的构造应力场,主要为:成矿前:(加里东—华里西期)北北东—南北→北北东→北西→北北西;成矿期:(华里西—印支期)北北东—南北→北北西;成矿后期:(燕山—喜山期)北西—北西西→北东东—东西→南北;并为未来区内的构造应力场的研究提出了确定原则;最后在区域大地构造演化基础上,归纳出研究区构造应力演化过程。在该矽卡岩型铜多金属矿田成矿期构造北西西、近东西、北东东向断裂交汇部位及其派生断裂是寻找矿的有利构造部位。In recent years the prospecting work in Qimantage of east Kunlun makes it an urgent problem to carry out the study of ore-field structures in the deeper and outer areas.This research takes Hutouya ore field as a case for the analysis of the tectonic stress field.Using the field geological observation,regional tectonic analytical method,fractured analytical method,joint statistic analytical method,and conjugate shear joints analytical method,this paper studied for the first time the faulted structures,the joints and the ductile faults.It is proposed that the structural stress field can be divided into pre-mineral periods(NNESN→NNE→NNW),metallogenic periods(NENNE→SNNNW)and post-mineralization(NWNWW→NEEEW→SN),establishing a fundamental principle of the tectonic stress field in Qimantage area.On the basis of regional tectonic evolution,the process of tectonic stress field in the study area is induced.In the skarn-type polymetallic deposit,the intersections of NWW,near-EW,NEE trending faults and their derived faults are favorable prospecting locations.

关 键 词：祁漫塔格 多金属矿田 构造应力场 成矿期构造 

分 类 号：P618.41[天文地球—矿床学]