| 中酸性岩浆体系成矿流体及微量元素地球化学特征 |
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| 引用本文： | 李 剑,吕志成 董方浏.中酸性岩浆体系成矿流体及微量元素地球化学特征[J].中国地质,2005,32(4):614-624. |
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| 作者姓名： | 李 剑 吕志成 董方浏 |
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| 作者单位： | 1. 中国地质大学地球科学学院,北京,100083;中国地质调查局,北京,100011
2. 中国地质调查局发展研究中心,北京,100037 |
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| 基金项目： | 国家自然科学基金项目（40473010）和云南省省院省校合作项目（2002ZBBEA058004）资助. |
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| 摘 要： | 从流体成矿作用角度出发，与酸性岩浆体系有关的成矿流体可以分为：酸性岩浆硅酸盐熔融体，岩浆一热液过渡阶段硅酸盐熔融体及其分异的流体，酸性岩浆熔体分异形成的热水成矿溶液。酸性岩浆体系主要提供热源和部分矿质，其提供的热源驱动地下水淋滤、萃取围岩中的成矿物质形成地下水热液成矿流体。变质岩混合岩化形成花岗质岩浆过程中所形成的混合岩化成矿流体。在此基础上，讨论了上述不同成矿流体的微量元素地球化学特征及其对成矿的控制作用。
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| 关 键 词： | 中酸性岩浆体系 成矿流体 微量元素地球化学 |
| 文章编号： | 1000-3657（2005）04-0614-11 |
| 收稿时间： | 2004-04-12 |
| 修稿时间： | 2004-04-122005-08-30 |
Oreforming fluids related to the magmatism system Intermediateacid And their trace element geochemical characteristics |
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| LI Jian,LU Zhicheng,DONG Fangliu.Oreforming fluids related to the magmatism system Intermediateacid And their trace element geochemical characteristics[J].Chinese Geology,2005,32(4):614-624. |
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| Authors: | LI Jian LU Zhicheng DONG Fangliu |
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| Institution: | 1.College of Earth Sciences, China University of Geosciences, Beijing 100083, China; 2. China Geological Survey; 3. Development and Research Center, China Geological Survey, Beijing 100037, China |
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| Abstract: | Ore-rotating fluids related to the intermediate-acid magma system can be divided according to fluid mineralization into silicate melt formed in the acid magmatic slage,the mixture of silicate melt and its exsolved hydrothermal fluids during the transitional stage from silicate melt to hydrothermal fluids hydrothermal ore-fluids exsolved from the intermediate-acid melts,and migrnatized ore-forming fluids formed during the formation of granites migmatitization of metamorphic rocks. The acid magma system mainly provides heat and a part of ore sulstances and the heat provided ly it drives sulsurface water to leach the country rocks and extract ore sulstarces from the country rocks, thus forming sulsurface hydrothermal ore rids.On the basis of these studies, detailed trace element geochemical characteristics of the alove-mentioned different ore-forming fluids and their controls on mineralication are discussed. |
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| Keywords: | intermediate-acid magmatic system ore-forming fluid the geochemistry of trace element |
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