| Research on ΣCO_2 Source in Ore-forming Hydrothermal Solution of Granite-Type Uranium Deposit, South China |
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| 引用本文： | 胡瑞忠,李朝阳,倪师军,刘莉,于津生.Research on ΣCO_2 Source in Ore-forming Hydrothermal Solution of Granite-Type Uranium Deposit, South China[J].中国科学B辑(英文版),1993(10). |
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| 作者姓名： | 胡瑞忠 李朝阳 倪师军 刘莉 于津生 |
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| 作者单位： | Institute of Geochemistry，Academia Sinica，Guiyang 550002，PRC，Institute of Geochemistry，Academia Sinica，Guiyang 550002，PRC，Institute of Geochemistry，Academia Sinica，Guiyang 550002，PRC，Institute of Geochemistry，Academia Sinica，Guiyang 550002，PRC，Guangzhou Branch，Institute of Geochemistry，Academia Sinica，Guangzhou 510640，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China, and by the Fund of Laboratory of Ore Deposit Geochemistry, Academia Sinica. |
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| 摘 要： | Multi-constraints are used in this paper to discuss the ΣCO_2 source in oreforming hydrothermal solution of granite-type uranium deposit in South China. The studies show that highly acidic and uraniferous granitic magma cannot produce the fluid rich in ΣCO_2. Controlled by three periods of crust extension and corresponding to three major periods of U-mineralization in South China respectively, the ΣCO_2 in each ore-forming hydrothermal solutions is all mantle-derived. Our studies reasonably explain why the mineralization did not occur immediately after the end of differentiation of the granitic magma rich in uranium, and why the ore-forming time of granite-type uranium deposit focuses on the time of crust extension after the formation of the uraniferous granites.
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| 关 键 词： | granite-type uranium deposit ΣCO_2 source mantle crust extension South China. |
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