| 稀有气体同位素示踪成矿古流体研究进展 |
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| 引用本文： | 李兆丽,胡瑞忠,彭建堂,毕献武,李晓敏.稀有气体同位素示踪成矿古流体研究进展[J].地球科学进展,2005,20(1):57-063. |
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| 作者姓名： | 李兆丽 胡瑞忠 彭建堂 毕献武 李晓敏 |
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| 作者单位： | 1.中国科学院地球化学研究所矿床地球化学重点研究实验室，贵州 贵阳 550002；
2.中国科学院研究生院，北京 100039 |
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| 基金项目： | 国家重点基础研究发展规划项目二级课题“扬子地块西缘大面积低温成矿系统” （编号：G1999043200）；中国科学院知识创新工程重要方向项目“中国南方大陆岩石圈拉张及其成矿作用”（编号：KZCX3-SW-125）资助. |
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| 摘 要： | 稀有气体（特别是He、Ar）是一种研究成矿古流体来源的灵敏示踪剂。地球不同圈层的稀有气体同位素具有不同的特征同位素比值。测试样品流体包裹体中的稀有气体同位素值，从测试值中排除掉包裹体形成后各种后生过程对流体初始同位素组成的影响。把得到的结果与前人研究总结的特征值进行比较分析，可以示踪成矿流体来源，从而探讨各种矿床的成矿机制与成矿作用。归纳了近年来用稀有气体同位素来示踪成矿流体的研究进展，概括了其在不同类型矿床中的应用现状，并指出当前该方法存在的问题及发展趋势。
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| 关 键 词： | 稀有气体同位素 成矿流体 流体包裹体 |
| 收稿时间： | 2001-10-29 |
| 修稿时间： | 2004-04-05 |
Advances in Tracing the Ore-forming Fluids Using Rare Gas Isotopes |
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| LI Zhaoli,HU Ruizhong,PENG Jiantang,BI Xianwu,LI Xiaomin.Advances in Tracing the Ore-forming Fluids Using Rare Gas Isotopes[J].Advance in Earth Sciences,2005,20(1):57-063. |
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| Authors: | LI Zhaoli HU Ruizhong PENG Jiantang BI Xianwu LI Xiaomin |
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| Institution: | 1.Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, CAS, Guiyang 550002, China;;
2. Graduate School, CAS, Beijing 100039, China |
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| Abstract: | Rare gas isotopes, especially helium and argon isotopes, are sensitive to trace the origin of the ancient ore-forming fluids. Rare gases in different spheres of the earth have different characteristic isotopic ratios. The rare gas isotopic ratio in the fluid inclusions of the samples is determined, and
the influence caused by all kinds of latter processes from the measured data is ruled out. Comparing the above result with the characteristic values in different reservoirs in Earth, we can trace the origin of ore-forming fluids and further discuss the mineralization mechanism for some deposits. The progresses of tracing ore-forming fluids in different kinds of ore deposits using rare gas isotopes are summarized, and some problems and the developing tendency about this method are also discussed. |
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| Keywords: | Rare gas isotopes Ore-forming fluids Fluid inclusions |
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