班公湖—怒江成矿带西段主要岩浆热液型矿床成矿特征初探
    点此下载全文
引用本文:王立强,王勇,旦真王修,李宝龙,李壮,李申,范源,李威,龚福志.2017.班公湖—怒江成矿带西段主要岩浆热液型矿床成矿特征初探[J].地球学报,38(5):615-626.
DOI:10.3975/cagsb.2017.05.03
摘要点击次数: 112
全文下载次数: 101
作者单位E-mail
王立强 中国地质科学院矿产资源研究所, 国土资源部成矿作用与资源评价重点实验室 wlq060301@163.com 
王勇 中国地质大学(北京)  
旦真王修 中国地质大学(北京)  
李宝龙 中国地质科学院矿产资源研究所, 国土资源部成矿作用与资源评价重点实验室  
李壮 中国地质科学院矿产资源研究所, 国土资源部成矿作用与资源评价重点实验室中国地质大学(北京)  
李申 成都理工大学  
范源 西藏自治区地质矿产勘查开发局地热地质大队  
李威 四川省地质调查院  
龚福志 西藏自治区地质矿产勘查开发局第二地质大队  
基金项目:中国地质调查局地质调查项目(编号: DD20160026);国家自然科学基金项目(编号: 41403040)
中文摘要:文章对班公湖—怒江成矿带西段与岩浆热液有关的主要矿床空间分布、矿化类型进行了总结; 对主要成矿事件形成时代进行了统计, 识别出6期成矿事件, 分别为晚侏罗世早期、晚侏罗世晚期、早白垩世晚期、晚白垩世中期、晚白垩世晚期和中新世。基于前人研究成果, 对主要矿床地质特征、成矿岩浆岩基本地质特征、岩石地球化学特征进行了阐述和对比研究, 明确了成矿岩体特征之差异。通过对班—怒成矿带西段主要矿床成矿岩体锆石Hf同位素和辉钼矿Re含量的梳理, 阐明了成岩-成矿物质源区差异与矿化元素组合之间的耦合关系, 即幔源物质参与成矿强度大, 形成铜金矿。最后, 文章对区域成矿特征进行了总结梳理, 并提出了班公湖—怒江成矿带西段可望取得找矿新进展的矿床类型和找矿方向。
中文关键词:岩浆热液型矿床  岩浆岩特征  成岩成矿物质源区  矿化元素组合  班公湖—怒江成矿带西段
 
A Tentative Discussion on Metallogeny of the Main Magmatic-hydrothermal Ore Deposits in the Western Bangong Co–Nujiang Metallogenic Belt, Tibet
Abstract:With magmatic-hydrothermal mineralization as the topic, this paper summarized the spatial distribution and mineralization types of the main ore deposits in the western Bangong Co–Nujiang metallogenic belt and investigated their metallogenic epochs. Six mineralization events were recognized, i.e., the early stage of Late Jurassic, the late stage of Late Jurassic, the late stage of Early Cretaceous, the middle stage of Late Cretaceous, the late stage of Late Cretaceous, and the Miocene period. On such a basis, this paper illustrated the mineralization features of the main ore deposits and compared the differences of basic geological characteristics, major elements, rare earth elements and trace elements compositions between the ore-forming intrusions. Based on studying Hf isotope of zircons from ore-forming intrusive rocks and Re content of molybdenite of the main ore deposits, the authors clarified the relationship between different diagenetic-metallogenetic material sources and mineralization elements associations, i.e., the more mixed mantle derived materials in the ore-forming process, the more possible the formation of the Cu-Au mineralization association. Based on the current prospecting and exploration extent, the regularity of the main magmatic-hydrothermal ore deposits was summarized, and the deposit types expected to make breakthrough and their corresponding target areas were also analyzed.
keywords:magmatic-hydrothermal ore deposits  characteristics of ore-forming intrusions  sources of ore-forming materials  mineralization elements association  western Bangong Co–Nujiang metallogenic belt
查看全文  查看/发表评论  下载PDF阅读器
版权所有 《地球学报》编辑部 Copyright©2008 All Rights Reserved
主管单位:国土资源部 主办单位:中国地质科学院
地址: 北京市西城区百万庄大街26号,中国地质科学院东楼317室 邮编:100037 电话:010-68327396 E-mail: diqiuxb@126.com
技术支持:东方网景