东秦岭(河南段)二郎坪群铜多金属成矿环境及成矿效应  

Metallogenic environment of copper polymetallic deposit in erlangping group of east Qinling and its metallogeny

作　　者：冯胜斌[1] 周洪瑞[1] 燕长海[2] 彭翼[2] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]河南省地质调查院,河南郑州450007

出　　处：《矿产与地质》2006年第6期598-607,共10页Mineral Resources and Geology

基　　金：中国地调局国土资源大调查查项目(199910200227);中国地调局地质调查项目(200310200001-5)资助

摘　　要：二郎坪群位于北秦岭造山带中,在二郎坪群这套火山—沉积岩系中,含有在河南省占有重要地位的铜多金属矿。文章通过对二郎坪群的沉积建造特征、变基性火山岩的形成环境和岩浆来源特征的研究,认为二郎坪群形成于弧后盆地环境,其盆地规模和岩浆来源在盆地东西方向上存在差异,而铜多金属矿床成矿作用与二郎坪群的形成环境和变基性火山岩岩浆来源有着紧密的内在联系。二郎坪群弧后盆地在海底喷流作用下形成了不同成矿元素组合的铜-锌型和铅-锌型两种矿床类型。Erlangping group, which lies in northern Qinling orogenic belt, is a set of .volcanic-sedimentary rock series which host an important copper polymetallic mineralization belt in Henan province. After the research on sedimentary characteristics, forming environment and source of magma of metabasite , it is considered that the volcanic-sedimentary association of Erlangping Group was formed in the back-arc basin, There are some differences in the scale of the back-arc basin of Erlangping and its magma source in east and west, while the mineralization of copper polymetallic deposit is closely associated with the forming environment of Erlangping Group and the magma source of volcanic metabasite. Copper zinc type and lead zinc type deposits with different ore elements were formed in Back arc basin of Erlangping Group by sea bottom spout.

关 键 词：二郎坪群 铜多金属矿床 成矿环境 变基性火山岩 热水沉积岩 弧后盆地 东秦岭 

分 类 号：P534.4[天文地球—古生物学与地层学] P536[天文地球—地质学]