沉积岩型铜矿床类型及其与岩浆活动的关系研究  

Study on types of sediment-hosted stratiform copper(SSC)and the relationship between SSC and magmatic activity

作　　者：杜玉龙 DU Yulong(Minmetals Exploration&Development Co.,Ltd,Beijing,100010,China;Sinotech Minerals Exploration Co.,Ltd,Beijing 100012,China)

机构地区：[1]五矿勘查开发有限公司,北京100010 [2]中色地科矿产勘查股份有限公司,北京100012

出　　处：《矿产勘查》2021年第5期1111-1125,共15页Mineral Exploration

基　　金：“玻利维亚Tupiza、Cuprita等铜矿普查”(2014-032)项目资助。

摘　　要：沉积岩型铜矿床是全球重要的铜矿床类型,约占铜资源总量的30%。本文通过综述、构造岩相学路线踏勘和重点矿床找矿勘查,研究了全球沉积岩型铜矿床时空分布、矿床类型,重点研究了中—新生代典型沉积岩型铜矿床及其与岩浆活动的关系。结果表明:(1)沉积岩型铜矿床在全球各大洲典型沉积盆地均有分布,成矿时代主要集中在元古代、石炭纪、二叠纪—三叠纪、侏罗纪—白垩纪、古近纪—新近纪;(2)按容矿岩系,本文将沉积岩型铜矿床梳理为砂砾岩型铜矿、异地式砂砾岩型铜矿、砂页岩型铜矿、曼陀型铜矿、碳酸盐岩(白云岩)型铜矿和火山岩红层型铜矿等6个亚类,前5种铜矿床亚类型工业价值较大,是沉积岩型矿床找矿主要目标类型;(3)一些沉积岩型铜矿床成岩成矿与岩浆活动有一定关系,岩浆活动直接参与成岩成矿或控制矿化的产出,或对铜矿化形成叠加改造。一些沉积岩型铜矿与岩浆活动、以及斑岩成矿系统、IOCG成矿系统间有一定联系,通过本文研究可拓展其找矿思路,为境内外同类型铜矿床找矿勘查和找矿预测提供参考。Sediment-hosted stratiform copper(SSC)is an important type of copper deposit in the world,and accounts for about 30%of the total copper resources.In this dissertation,by means of summary,tectonic petrographic route survey and key deposit exploration,the distribution and type of SSC deposits have been studied,especially the typical SSC deposits in Mesozoic and Cenozoic era and the relationship between SSC and magmatic activity has been emphatically studied.The main results show that:(1)SSC deposits are distributed in typical sedimentary basins on all continents in the world,the metallogenic ages of SSC deposits are mainly concentrated in the Proterozoic,Carboniferous,Permian-Triassic,Jurassic-Cretaceous and Paleogene-Neogene;(2)according to the host rock series,SSC deposits can be classified into six sub-types,namely,glutenite copper deposit,exotic-copper deposit sand-shale copper deposit,manto-type copper deposit,carbonate(dolomite)copper deposit and volcanic redbed copper deposit,the first five types of deposits have greater industrial value,meanwhile they are the main targets for SSC deposits prospecting;(3)the diagenetic and metallogenic of some SSC deposits are related to magmatic activity,which directly participated in diagenesis and metallogenesis or controlled the output of mineralization or superimposed the formation of copper mineralization.Some SSC deposits have certain connection with magmatic activities,as well as the porphyry metallogenic system and the IOCG metallogenic system.The study in this dissertation can be used for expanding the prospecting ideas and provide reference for the exploration and prospecting prediction of SSC deposits both at home and abroad.

关 键 词：砂砾岩型铜矿 异地式砂砾岩型铜矿 砂页岩型铜矿 曼陀型铜矿 碳酸盐岩(白云岩)型铜矿 岩浆活动 

分 类 号：P618.41[天文地球—矿床学]