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| 藏南邦布大型金矿成矿流体He-Ar-S同位素组成及其成矿意义 | |
| 引用本文： | 韦慧晓,孙晓明,翟伟,石贵勇,梁业恒,莫儒伟,韩墨香,易建洲.藏南邦布大型金矿成矿流体He-Ar-S同位素组成及其成矿意义[J].岩石学报,2010,26(6):1685-1691. |
| 作者姓名： | 韦慧晓 孙晓明 翟伟 石贵勇 梁业恒 莫儒伟 韩墨香 易建洲 |
| 作者单位： | 1. 中山大学地球科学系,广州,510275 2. 中山大学地球科学系,广州,510275;中山大学海洋学院,广州,510006;广东省海洋资源与近岸工程重点实验室,广州,510275 3. 中山大学海洋学院,广州,510006;广东省海洋资源与近岸工程重点实验室,广州,510275 4. 西藏自治区地质矿产勘查开发局区域地质调查大队,拉萨,851400 |
| 基金项目： | 国家重点基础研究发展规划(973)项目 (2009CB421006、2002CB412610)、国家自然科学基金（40830425、40873034、40673045）、中央高校基本科研业务费专项基金和高等学校博士学科点专项科研基金（200805580031 ) |
| 摘 要： | 邦布金矿床位于青藏高原雅鲁藏布江结合带东段南侧,矿体受大型脆-韧性剪切带的次级断裂控制,其一系列地质地球化学特征显示该矿属于造山型金矿。其含金石英脉中黄铁矿的流体包裹体3He/4He=0.174～1.010Ra,40Ar/36Ar=311.9～1724.9,矿物δ34S=2.8‰～4.7‰,平均3.6‰;围岩中不含金黄铁矿流体包裹体3He/4He=0.01137Ra,40Ar/36Ar=1709.7,矿物δ34S=6.5‰,显示邦布金矿成矿流体主要由地壳流体组成,但其中有地幔流体的加入,幔源He占2.7%～16.7%。由壳幔相互作用导致的幔源流体的加入是邦布金矿重要的成矿条件。在印度板块与欧亚大陆板块碰撞过程中,形成切穿地壳的纵向剪切带,深源地幔流体上升,与地壳来源的富CO2流体混合,由于温度和压力下降和流体沸腾导致含金硫化物和石英结晶,并在其次级断裂构造中形成邦布金矿体。 |
| 关 键 词： | He-Ar-S同位素 壳幔相互作用 造山型金矿 邦布大型金矿 藏南 |
| 收稿时间： | 4/1/2010 12:00:00 AM |
| 修稿时间： | 2010/5/10 0:00:00 |
He-Ar-S isotopic compositions of ore-forming fluids in the Bangbu large-scale gold deposit in southern Tibet, China |
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| WEI HuiXiao,SUN XiaoMing,ZHAI Wei,SHI GuiYong,LIANG YeHeng,MO RuWei,HAN MoXiang and YI JianZhou.He-Ar-S isotopic compositions of ore-forming fluids in the Bangbu large-scale gold deposit in southern Tibet, China[J].Acta Petrologica Sinica,2010,26(6):1685-1691. | |
| Authors: | WEI HuiXiao SUN XiaoMing ZHAI Wei SHI GuiYong LIANG YeHeng MO RuWei HAN MoXiang and YI JianZhou |
| Institution: | Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China;Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China; School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China;School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China;School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China;School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou 510275, China;Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China;Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China;Geological Survey of Tibet Bureau of Geology and Mineral Exploration and Development, Lhasa 851400, China |
| Abstract: | |
| Keywords: | He-Ar-S isotopic compositions Crust-mantle interaction Orogenic gold deposit Bangbu large-scale gold deposit Southern Tibet |
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