| 中缅毗邻区金腊Pb-Zn-Ag多金属矿田元素、稳定同位素和流体包裹体地球化学 |
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| 引用本文： | 陈永清,黄静宁,卢映祥,夏庆霖,孙明祥,李建荣.中缅毗邻区金腊Pb-Zn-Ag多金属矿田元素、稳定同位素和流体包裹体地球化学[J].地球科学,2009(4). |
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| 作者姓名： | 陈永清 黄静宁 卢映祥 夏庆霖 孙明祥 李建荣 |
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| 作者单位： | 中国地质大学地球科学与资源学院;云南省地质调查局;中国地质大学资源学院; |
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| 基金项目： | 国家高技术研究发展计划“863”项目(No.2006AA06Z113);;国家自然科学基金项目(No.40772197);;国家科技支撑计划项目(No.2006BAB01A03) |
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| 摘 要： | 跨越中缅边境的金腊铅-锌-银多金属矿田包括南腊和金厂两处铅锌银矿床,大地构造上处于保山-掸泰地块东缘,勐统-耿马-西盟元古宙-古生代被动大陆边缘活动带南段.通过对容矿围岩、与矿化有关的花岗岩和矿石元素地球化学以及矿石硫、铅同位素和流体包裹体的研究,结论如下:(1)与同类岩石相比,与矿化有关的花岗岩普遍富集Pb、Zn、Cu、Au、Sn、W等成矿元素,其中钾长花岗斑岩与Pb-Zn-Ag矿化关系最密切.(2)铅同位素表明,矽卡岩型致密块状矿石铅同位素比值(206Pb/204Pb、207Pb/204Pb和208Pb/204Pb)皆低于热液充填型角砾状矿石和似层状硅化白云岩型矿石,意味着形成于岩体接触带的矽卡岩型矿石相对形成于远离岩体的热液充填型角砾状矿石和似层状硅化白云岩型矿石含有更低的放射性成因铅.(3)铅-锌-银矿化主要经历了两个成矿期:矽卡岩化成矿期和中低温热液成矿期,前者主要形成铅-锌-铜(金)矿化,后者主要形成铅-锌-银矿化;中低温热液成矿期又可划分为两个成矿阶段:中温成矿阶段(200～290℃)和低温成矿阶段(140～200℃),前者主要形成交代充填型硅化角砾岩矿体,后者主要形成层间破碎带充填型硅化矿体....
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| 关 键 词： | 铅-锌-银多金属矿化 地球化学 硫铅同位素 流体包裹体 中缅邻接区 |
Geochemistry of Elements,Sulphur-Lead Isotopes and Fluid Inclusions from Jinla Pb-Zn-Ag Poly-Metallic Ore Field at the Joint Area across China and Myanmar Border |
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| CHEN Yong-qing,HUANG Jing-ning,LU Ying-xiang,XIA Qing-lin,SUN Ming-xiang,LI Jian-rong .Faculty of Earth Sciences & Mineral Resources,China University of Geosciences,Beijing ,China .Yunnan Geological Survey,Kunming ,China .Faculty of Earth Resources,Wuhan ,China.Geochemistry of Elements,Sulphur-Lead Isotopes and Fluid Inclusions from Jinla Pb-Zn-Ag Poly-Metallic Ore Field at the Joint Area across China and Myanmar Border[J].Earth Science-Journal of China University of Geosciences,2009(4). |
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| Authors: | CHEN Yong-qing HUANG Jing-ning LU Ying-xiang XIA Qing-lin SUN Ming-xiang LI Jian-rong Faculty of Earth Sciences & Mineral Resources China University of Geosciences Beijing China Yunnan Geological Survey Kunming China Faculty of Earth Resources Wuhan China |
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| Institution: | CHEN Yong-qing1,HUANG Jing-ning1,LU Ying-xiang2,XIA Qing-lin3,SUN Ming-xiang2,LI Jian-rong2 1.Faculty of Earth Sciences & Mineral Resources,China University of Geosciences,Beijing 100083,China 2.Yunnan Geological Survey,Kunming 650051,China 3.Faculty of Earth Resources,Wuhan 430074,China |
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| Abstract: | Jinla Pb-Zn-Ag poly-metallic ore field across China and Myanmar,located at the south segment of the Mengtong-Gengma-Ximeng passive continental margin of Proterozoic era-Palaeozoic era,the eastern margin of the Baoshan-Shantai Massif,includes the Nanla and the Jinchang Pb-Zn-Ag deposits.According to the studies on both the element geochemistry of the host rocks,the granites,and the ore deposits and the sulphur-lead isotopes as well as fluid inclusion from the ore deposits in Jinchang Pb-Zn-Ag deposits.The co... |
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| Keywords: | Pb-Zn-Ag polymetallic mineralization geochemistry S-Pb isotopes fluid inclusion the joint area across China and Myanmar border |
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