中上扬子地块周缘主要金属成矿系统及成矿谱系  

The main metallogenic systems and metallogenic lineages around the Middle and Upper Yangtze Block

作　　者：姚书振[1] 宫勇军[1] 胡新露[1] 周宗桂[1] 沈传波[1] 皮道会[1] 熊索菲[2] 谭满堂[3] YAO Shuzhen;GONG Yongjun;HU Xinlu;ZHOU Zonggui;SHEN Chuanbo;PI Daohui;XIONG Suofei;TAN Mantang(School of Earth Resources,China University of Geosciences(Wuhan),Wuhan430074,China;Collaborative Innovation Center for Exploration of Strategic Mineral Resources,China University of Geosciences(Wuhan),Wuhan 430074,China;Wuhan Center,China Geological Survey,Wuhan430205,China)

机构地区：[1]中国地质大学(武汉)资源学院,湖北武汉430074 [2]中国地质大学(武汉)紧缺矿产资源勘查协同创新中心,湖北武汉430074 [3]中国地质调查局武汉地质调查中心,湖北武汉430205

出　　处：《地学前缘》2020年第2期218-231,共14页Earth Science Frontiers

基　　金：中国地质调查局项目(12120113094200,12120114066301)。

摘　　要：中上扬子地块周缘巨型成矿带是多旋回多阶段构造演化背景下成矿作用的产物。主要的成矿系统包括沉积-热水沉积成矿系统类、后生盆地流体成矿系统类、岩浆热液成矿系统类三大类。南华纪沉积-热水沉积锰成矿系统、震旦纪沉积-热水沉积铅锌成矿系统、震旦纪一寒武纪沉积-热水沉积银钒多金属成矿系统、二叠纪沉积-热水沉积锰成矿系统主要发育在古大陆边缘且形成于大地构造挤压向拉张的转换期,大型、超大型矿床定位受大陆边缘构造网络系统的制约,成矿的有利环境是拉张断裂控制的裂陷槽,同生断裂系统和深部含矿流体的持续补给是关键的控矿要素。印支一燕山早期后生盆地流体Pb-Zn成矿系统是本区主要的成矿系统且发育在盆山结合带,大型、超大型矿床定位主要受断裂、层位与岩性联合控制。燕山期岩浆热液型Pb-Zn多金属成矿系统受侵入接触构造体系控制,Pb-Zn矿体主要发育在外带;燕山期岩浆热液型Au多金属成矿系统主要发育在盆山结合带,大型、超大型矿床定位受断裂、褶皱构造和隐伏花岗岩的联合控制。本文初步构建了中上扬子地块周缘主要金属矿床成矿谱系。The giant metallogenic belt around the Middle and Upper Yangtze Block is a product of multicycle and multistage regional tectonic evolution.The major metallogenic systems include the sedimentaryhydrothermal sedimentary metallogenic systems,epigenetic basin fluid metallogenic system,and magmatic hydrothermal metallogenic system.The Nanhua Mn,Sinian Pb-Zn,Sinian-Cambrian Ag-V-polymetallic,and Permian Mn sedimentary-hydrothermal sedimentary metallogenic systems were mainly formed at the margin of the paleocontinent during the tectonic transition from compression to extension.The development of large and super-large deposits were constrained by the tectonic network system at the continental margin.The favorable environment for mineralization is the aulacogen controlled by extensional faults.The continuous supply of ore-forming fluids from the syngenetic fault system was the key factor for ore genesis.Indosinian to early Yanshanian epigenetic basin fluid Pb-Zn metallogenic system is the dominant metallogenic system in this region.It developed in the combination zone of the basin and orogenic belt.The development of large and ultra-large deposits was mainly controlled by the combination of faults,strata,and lithology.The Yanshanian magmatic hydrothermal Pb-Zn-polymetallic metallogenic system was controlled by the intrusive contact structures,while Pb-Zn orebodies mainly developed in the outer zone.The Yanshanian magmatic hydrothermal Au-polymetallic metallogenic system also developed in the combination zone of the basin and orogenic belt.The large and ultra-large deposits were controlled by the combination of faults,folds,and concealed granites.Finally,the preliminary metallogenic lineages of major metal deposits around the Middle and Upper Yangtze Block were constructed.

关 键 词：铅锌多金属成矿系统 锰成矿系统 金多金属成矿系统 成矿谱系 中上扬子地块 

分 类 号：P612[天文地球—矿床学] P611[天文地球—地质学]