| 班公湖—怒江成矿带西段尕尔穷铜金矿床辉钼矿Re-Os年龄及其地质意义 |
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| 引用本文： | 李志军,唐菊兴,姚晓峰,邓世林,王友. 班公湖—怒江成矿带西段尕尔穷铜金矿床辉钼矿Re-Os年龄及其地质意义[J]. 成都理工大学学报(自然科学版), 2011, 38(6): 678-683 |
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| 作者姓名： | 李志军 唐菊兴 姚晓峰 邓世林 王友 |
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| 作者单位： | 1. 成都理工大学地球科学学院,成都,610059
2. 中国地质科学院矿产资源研究所,北京,100037 |
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| 基金项目： | 国家自然科学基金资助项目(41172077);国土资源部公益性行业专项(201011013-3);青藏专项(1212010818089) |
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| 摘 要： | 尕尔穷铜金矿床的夕卡岩矿体之下陆续发现花岗斑岩脉,该花岗斑岩与夕卡岩存在密切的成生联系.通过辉钼矿的Re-Os同位素年龄测定技术,确定其成矿年龄为86.79 Ma,成矿时代是晚白垩世,矿床形成于班公湖—怒江洋盆向南俯冲碰撞和雅鲁藏布江洋盆向北俯冲碰撞的间歇期；狮泉河结合带在晚白垩世处于同碰撞期,大量中酸性岩浆岩侵位事件...
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| 关 键 词： | Re-Os年龄 尕尔穷铜金矿 班公湖—怒江成矿带 西藏 |
Re-Os isotope age and geological significance of molybdenite in the Gaerqiong Cu-Au deposit of Geji, Tibet, China |
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| LI Zhi-jun,TANG Ju-xing,YAO Xiao-feng,DENG Shi-lin,WANG You. Re-Os isotope age and geological significance of molybdenite in the Gaerqiong Cu-Au deposit of Geji, Tibet, China[J]. Journal of Chengdu University of Technology: Sci & Technol Ed, 2011, 38(6): 678-683 |
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| Authors: | LI Zhi-jun TANG Ju-xing YAO Xiao-feng DENG Shi-lin WANG You |
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| Affiliation: | 1.College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China; 2.Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China |
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| Abstract: | A series of granite porphyrys veins are discovered under the skarn ore body of the Gaerqiong Cu-Au deposit,where granite porphyry and skarn coexist.The Re-Os age of the deposit is 86.79 Ma,indicating that the metallogenetic epoch is between the south subduction of the Bangonghu-Nujiang ocean basin ending in Early Cretaceous and the north subduction of the Yarlung Zangbo ocean basin starting in Late Cretaceous.In this period,the extensive alterations of carbonate rocks formed in Early Cretaceous were caused by the intrusions of medium-acidic magma in the Shiquanhe suture zone.The multi-phases of structural and magmatic movements with wall rock block are the advantaged geological conditions to form the deposit. |
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| Keywords: | Re-Os age Gaerqiong Cu-Au deposit Bangonghu-Nujiang metallogenic belt Tibet |
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