钦杭Cu-Au-Pb-Zn-W成矿带(东段)主要地质成矿特征及潜力分析  

Geological Characteristics of Minerogenesis and Prospecting in Eastarn Qinzhou-Hangzhou Cu-Au-Pb-Zn-W Metallogenic Belt

作　　者：刘一[1] 骆学全[1] 张雪辉[1] 班宜忠[1] 曾勇[1] 周宗尧 楼法生[3] 

机构地区：[1]中国地质调查局南京地质调查中心,南京210016 [2]浙江省地质调查院,杭州311203 [3]江西省地质调查研究院,南昌330201

出　　处：《地质学报》2016年第7期1551-1572,共22页Acta Geologica Sinica

基　　金：中国地质调查局地质矿产调查评价专项项目(编号:1212011120846)资助

摘　　要：钦杭成矿带(东段)是我国重要的成矿带之一。随着地质大调查的开展,新的找矿进展和预测成果不断涌现,需要对其开展系统的成矿区划和部署研究工作。本文以新的研究成果和找矿突破为基础,结合区域成矿地质背景的综合研究,在区内划分了3个Ⅲ级成矿带及8个Ⅳ级成矿带,并论述了8个Ⅳ级成矿单元的成矿地质特征。钦杭成矿带(东段)的成矿作用具有多期成矿的时间分布特征,主要有晋宁、加里东、海西、燕山等4个成矿期,其中燕山期最为重要。区内矿床类型以斑岩-矽卡岩型、海底火山-热水喷流沉积型铜金多金属矿、石英脉型钨锡多金属、火山热液型铅锌金银多金属矿最为重要,还产出有韧性剪切带型(金山金矿)、石英脉型、构造蚀变岩型金矿,海相沉积型铁锰矿等众多矿床类型。结合区域找矿进展和潜力评价最新成果,认为Cu、Au、Ag、W、Mo、Pb、Zn等矿种资源量潜力优势显著。为下一步勘查部署的主攻矿种,同时在本区划分了9个远景区,对研究区下一步矿产勘查部署工作有一定指导意义。The eastern section of Qinzhou-Hangzhou belt is one of the most important metallogenic belts in China.With the constant emergence of geological exploration progress and assessment results,systematic studies on metallogenic regionalismand exploration deployment are on demand.Based on recent research findings and prospecting breakthroughs,the paper divides 3Ⅲ-level metallogenic units and 8Ⅳ-level units in the study area in combination with regional metallogenic settings,and interprets the ore-forming geological characteristics of the 8 Ⅳ-level metallogenic units.Characterized by multi-phase of temporal distribution in metallogenic process,there are four major ore-forming stages in eastern Qinzhou-Hangzhou belt,in which the Yanshanian is the keystone,followed by the Jinning,Caledonian and Hercynian.The typical metallogenic types in the study area are：porphyry-skarn type,submarine volcano plumehydrothermal sedimentation copper polymetallic deposits,quartz vein tungsten-tin deposits and volcanic hydrothermal lead-zinc-gold-silver polymetallic deposits,accompanied by the occurrence of ductile shear zone（Jinshan gold deposit）,quartz vein,structure alteration rock gold deposits and marine sedimentary iron-manganese ore beds.The latest achievements of regional prospecting progress and metallogenic potential evaluation indicate that the predominant resources with great potential are Cu,Au,Ag,W,Mo,Pb and Zn.Besides,this research determines 9prospect areas in eastern Qinzhou-Hangzhou metallogenic belt,expecting to instruct the next exploration deployment work effectively.

关 键 词：钦杭成矿带(东段) 成矿地质特征 潜力分析 找矿方向 

分 类 号：P618.2[天文地球—矿床学]