| 湖南柿竹园矿田柴山铅锌矿床的C、O同位素组成及其研究意义 |
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| 引用本文： | 武丽艳,胡瑞忠,彭建堂,毕献武,陈宏伟,王巧云,刘桠颖.湖南柿竹园矿田柴山铅锌矿床的C、O同位素组成及其研究意义[J].地球化学,2009,38(3):242-250. |
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| 作者姓名： | 武丽艳 胡瑞忠 彭建堂 毕献武 陈宏伟 王巧云 刘桠颖 |
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| 作者单位： | 1. 中国科学院,地球化学研究所,矿床地球化学围家重点实验室,贵州,贵阳,550002;中国科学院,研究生院,北京,100049
2. 中国科学院,地球化学研究所,矿床地球化学围家重点实验室,贵州,贵阳,550002 |
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| 基金项目： | 国家自然科学基会重点项目，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 研究了柿竹园矿田柴山铅锌矿床早、晚期方解石的C、O同位素组成，并对C、O同位素组成之间明显的正相关关系进行了CO2去气、流体混合与水．岩反应的理论模拟。结果表明，该矿床方解石的形成主要是由成矿流体与围岩发生水-岩反应及温度降低造成的，另外大气降水的加入也起到一定的作用。成矿流体中的可溶性碳以H2CO3为主，早期成矿流体的δ^13C、δ^18O值分别为-2．5‰＋4‰，晚期成矿流体的δ^13C、δ^18O值分别为-1‰和＋6‰，并且在成矿过程中一直有中生代大气降水的加入。
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| 关 键 词： | C同位素 O同位素 成矿流体 水.岩反应模式 柴山矿床 柿竹园矿田 |
Carbon and oxygen isotopic compositions of Chaishan Pb-Zn deposit in the Shizhuyuan ore field and implications |
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| WU Li-yan,HU Rui-zhong,PENG Jian-tang,BI Xian-wu,CHEN Hong-wei,WANG Qiao-yun,LIU Ya-ying.Carbon and oxygen isotopic compositions of Chaishan Pb-Zn deposit in the Shizhuyuan ore field and implications[J].Geochimica,2009,38(3):242-250. |
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| Authors: | WU Li-yan HU Rui-zhong PENG Jian-tang BI Xian-wu CHEN Hong-wei WANG Qiao-yun LIU Ya-ying |
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| Institution: | WU Li-yan1,2,HU Rui-zhong1,PENG Jian-tang1,BI Xian-wu1,CHEN Hong-wei1,WANG Qiao-yun1,2 and LIU Ya-ying1,2 1.State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049 |
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| Abstract: | The carbon and oxygen isotopic compositions of calcite from the Chaishan Pb Zn deposit in the Shizhuyuan ore field show a positive correlation between carbon and oxygen isotope compositions in the early and late ore forming stages, respectively.The theoretical modeling of CO2 degassing, mixing of two fluids and fluid-rock interaction reveals that the calcite precipitation may be best explained by fluid-rock interaction together with decreases in temperature.Meteoric water also played a certain role.The ore ... |
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| Keywords: | carbon isotope oxygen isotope ore forming fluid modeling of fluid-rock interaction Chaishan deposit Shizhuyuan ore field |
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