藏南查拉普岩金矿床特征、发现及时代约束  

Mineralization Characteristics, Discovery and Age Restriction of Chalapu Hardrock Gold Deposit, Southern Tibet

作　　者：郑有业[1] 多吉 马国桃[1] 陈静 代芳华[1] 

机构地区：[1]中国地质大学资源学院 [2]西藏自治区地勘局,西藏拉萨850000

出　　处：《地球科学（中国地质大学学报）》2007年第2期185-193,共9页Earth Science-Journal of China University of Geosciences

基　　金：国家重点基础研究发展规划项目(No2002CB412610);国家自然科学基金项目(No40542008);国家新一轮国土资源大调查项目(No200010200155)

摘　　要：查拉普岩金矿床是藏南著名的北喜马拉雅构造带中新发现的第一个也是最大一个岩金矿床,是西藏境内迄今为止报道的首个卡林型金矿床.但它的发现只是藏南岩金找矿突破的前奏,随着勘查研究工作的深入,北喜马拉雅构造带在岩金或以岩金为主的金锑找矿方面将会取得重大突破.首次系统介绍查拉普岩金矿床成矿环境、成矿特征的同时,对其成矿时代提出约束,得出该类型金矿最终成矿作用与藏南大规模拆离系的形成和演化密切相关,也显示北喜马拉雅与冈底斯斑岩铜矿带在晚新生代成矿方面具有某种成因联系,为该区进一步的岩金找矿提供了参考和借鉴,具有重要的理论及现实意义.Chalapu gold deposit, situated in the northern Himalayas, is the largest hardrock gold deposit which happens to be the very first one found in southern Tibet. It is also the first Carlin-type gold deposit reported so far. Its discovery is the beginning of finding hardrock gold deposit in southern Tibet, and there will be many breakthroughs in hardrock gold and antimony deposits prospecting in the northern Himalayas with further work. This paper introduces the metallogenic background and mineralization characteristics, ages restriction of the gold deposit. We conclude the mineralization of the gold deposit is related to the southern Tibet detachment forming and evolvement, and the ore-forming is related between the northern Himalayas and the Gangdise porphyry copper belt in Late Cenozoic. This discovery is of great significance both in theory and practice for finding hardrock gold deposits in the region.

关 键 词：藏南 北喜马拉雅构造带 查拉普岩金矿床 卡林型 时代约束 

分 类 号：P618.51[天文地球—矿床学]