新疆库鲁克塔格成矿带主要矿床类型及成矿系列划分  

Tectonic Evolution and Formation of Major Ore Deposits in Kuluketage Metallogenic Belt,Xinjiang

作　　者：曹晓峰[1] 王祥东[1] 吕新彪[1,2] 袁迁[1] 汪一凡[2] 刘文[2] 申文[3] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]中国地质大学地质调查研究院,湖北武汉430074 [3]湖北省国土资源厅,湖北武汉430071

出　　处：《地球科学（中国地质大学学报）》2015年第6期1017-1033,共17页Earth Science-Journal of China University of Geosciences

基　　金："十二.五"国家科技支撑计划项目(No.2011BAB06B04-05);中国博士后科学基金委特别资助项目(No.2013T60758);中国博士后科学基金委面上资助项目(No.2012M521492);中国地质大学(武汉)中央高校基本科研业务费专项资金资助项目(Nos.CUG120840;CUG120702;CUGL120296)

摘　　要：库鲁克塔格是新疆前寒武纪出露较全的地区,然而该区区域成矿规律研究程度非常低.通过对研究区已有资料进行总结分析,系统阐述研究区矿床类型,并对其成矿系列进行划分.研究区从太古代到早古生代形成了7个主要的岩浆构造演化阶段：古太古代陆核形成阶段（3.3~3.0Ga）、新太古代-古元古代陆壳增生改造阶段（2.6~2.3Ga）、古元古代中晚期陆壳改造阶段（2.1~1.8Ga）、中元古代晚期-新元古代早期造山运动阶段（1.1~0.86Ga）、新元古代中期后碰撞伸展阶段（830~800Ma）、新元古代中晚期陆内裂解阶段（770~600Ma）和早古生代造陆运动阶段.成矿作用主要发生在古元古代、新元古代及早古生代.依据各构造演化阶段、含矿建造特征及矿床成因特征,将库鲁克塔格成矿作用类型总结为以下6个主要成矿系列,即形成于古元古代陆壳增生改造环境下的Fe-P-Cu-Au系列、新元古代俯冲碰撞环境下的Cu-Au系列、新元古代后碰撞环境下的Cu-Mo-Au-Fe-P-REE系列、新元古代裂解环境下的Cu-Ni系列、早古生代沉积盆地中Ag-V-Mo-Au-U-P系列和早古生代俯冲岛弧环境下的Cu-Au系列.Kuluketage block is one of the best areas for Precambrian geology studies in Xinjiang,however,the regional metal-logeny of the research area is still too poon.In this paper,all the published literatures are summarized.Then,the geology of main ore deposits and the classified metallogenic series in this block are systematically described.The following seven tectono-thermal periods are distinguished：Archean crust nucleus growing stage （3.3 -3.0 Ga）,Neoarchean-Paleoproterozoic crust growth and transformation stage （2.6-2.3 Ga）,middle-late Paleoproterozoic crust transformation stage （2.1-1.8 Ga）,Late Mesoproterozoic to Early Neoproterozoic orogeny stage （1.1 -0.86 Ga）,Middle Neoproterozoic orogenic extensional stage （830-800 Ma）,middle-late Neoproterozoic intracontinental breakup stage （770-630 Ma）and Early Paleozoic land building stage.Mineralization mainly occurred at Paleoproterozoic,Neoproterozoic and Early Paleozoic.According to the ore-formingtectonic settings,ore-bearing rock formations and ore deposit genesis,six typical metallogenic series are identified in our study, including Fe-P-Cu-Au metallogenic series formed at Paleoproterozoic crust growth and transformation stage,Cu-Au metallogen-ic series formed at Early Neoproterozoic orogeny stage,Cu-Mo-Au-Fe-P-REE metallogenic series formed at Neoproterozoic post-collision stage,Cu-Ni metallogenic series formed at Neoproterozic rifting stage,Ag-V-Mo-Au-U-P metallogenic series formed at Early Paleozoic sedimentary basin and Cu-Au metallogenic series formed at Early Paleozoic arc subduction stage.

关 键 词：库鲁克塔格 构造 矿床 成矿系列. 

分 类 号：P612[天文地球—矿床学]