库车坳陷依西其开克一带铜矿化地层沉积相分析  

Analysis of sedimentary facies of copper-bearing formation in Yixiqikaike area of Kuche depression

作　　者：金涛[1] 姜振宁[1] 王富强[1] Jin Tao;Jiang Zhenning;Wang Fuqiang(Geological Institute of China Chemical Geology and Mine Bureau,Beijing,100101,China)

机构地区：[1]中化地质矿山总局地质研究院,北京100101

出　　处：《化工矿产地质》2021年第3期206-210,共5页Geology of Chemical Minerals

基　　金：中国地质调查局天山-北山成矿带那拉提-营毛沱地区地质矿产调查项目《新疆拜城县龙口-乌堂一带铜多金属矿远景调查》(12120115021601)。

摘　　要：库车坳陷依西其开克一带砂岩型铜矿化主要赋存于中新统吉迪克组地层中。本文通过对吉迪克组地层沉积环境进行分析研究,识别出区内主要发育(砾质)辫状河冲击扇相、中-远端过渡相、辫状河冲积扇远端相、湖泊三角洲相、滨浅湖相等沉积相类型,认为辫状河冲击扇相的远端相及其与三角洲前缘相的过渡相的沉积环境为砂岩型铜矿必要的控矿因素。The copper mineralization of sandstone mainly occurs in Miocene Jidike formation in Yixiqikaike area of Kuche depression.Based on the analysis and study on the sedimentary environment of Jidike formation,we identify the types of braided-river alluvial fan,middle-distal transition facies,distal faces of braided alluvial fan,lake delta facies and lakeshore or shallow lake sedimentary facies,It is considered that the distal facies of the braided river alluvial fan,and its transition facies to the front edge of the delta facies are the necessary ore controlling factors for the sandstone-type copper ore.

关 键 词：含铜矿化砂岩 沉积相 控矿因素 库车坳陷 

分 类 号：P512.2[天文地球—地质学] P618.41