内蒙古呼伦贝尔盟科尔沁右翼中旗布敦花铜矿床成矿物质来源探讨  

Source of Ore-Forming Material of the Budunhua Copper Deposit in Middle Ke'Erqin County of Inner Mogolia

作　　者：仇一凡[1] 张航[1] 龚鹏[2] 

机构地区：[1]中国地质大学地球科学学院,湖北武汉430074 [2]中国地质大学信息工程学院,湖北武汉430074

出　　处：《工程地球物理学报》2011年第6期692-698,共7页Chinese Journal of Engineering Geophysics

基　　金：中国地质调查局发展研究中心子课题(编号:1212010733805);国家地质学理科基地人才培养基金项目(编号:J0830520)联合资助

摘　　要：布敦花铜矿床位于我国重要的铜多金属成矿区带——大兴安岭铜多金属成矿区带南部。经前人研究,认为布敦花铜矿床与燕山期中酸性杂岩体具有密切的成因关系。但从1958年该矿床发现至今,对其成矿物质来源问题长期争论不休,本文从布敦花花岗闪长岩和赋矿围岩(二叠纪地层)的成矿元素丰度及布敦花铜矿床赋矿围岩、岩体和变质基底中的Pb同位素组成和矿石铅进行示踪研究,结果表明二叠系大石寨组赋矿围岩为该矿床铜成矿物质的一个重要来源。The Budunhua copper deposit of Inner Mongolia is located in the south part of polymetallic minerogenetic belt of Da Hinggan Mountains,which is one of the most important polymetallic minerogenetic belts in China.The copper deposit is closely related Yanshan stage and middle-acid complex-Budunhua rock masses.However,the deposit has been found so far since 1958,while its source of copper ore is still not fully understood.Based on the study of the characteristics of lead isotope of surrounding rocks,igneous rocks,ores and basement rocks,the results indicate that the lower Permian Dashizhai formation stratum is an important source of ore-forming materials of the Buduanhua copper deposit.

关 键 词：内蒙古 布敦花铜矿床 物质来源 Pb同位素示踪 

分 类 号：P631[天文地球—地质矿产勘探]