| 铼－锇同位素体系对揭示矿质来源的作用 |
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| 引用本文： | 熊永良.铼－锇同位素体系对揭示矿质来源的作用[J].地学前缘,1994(4). |
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| 作者姓名： | 熊永良 |
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| 作者单位： | 爱达荷大学矿业及地球资源学院地质及地质工程系 |
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| 摘 要： | 近几年以来，由于铼－锇同位素体系逐渐应用于基性－超基性岩有关的岩浆型矿床中，对这类矿床的成矿物质来源有了更为深刻的认识。许多过去被认为是由幔源物质形成的岩浆型矿床（例如Ｂｕｓｈｖｅｌｄ、Ｓｕｄｂｕｒｙ等），其实地壳物质占有相当大的比例。同时，由于铼－锇同位素体系揭示了源于地壳之放射性成因锇的存在，新的成矿观点也就应运而生。例如，一些学者用热液成矿作用来解释Ｂｕｓｈｖｅｌｄ矿床中地壳成因的锇同位素特征；陨石撞击成因被再次用来解释Ｓｕｄｂｕｒｙ的成因，因为陨石撞击能有效提供形成Ｓｕｄｂｕｒｙ复式岩体所必须的地壳物质（地壳物质所占比例大于６０％）。
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| 关 键 词： | 铼－锇同位素，成矿物质来源，岩浆型矿床 |
THE ORE-FORMING MATERIALS FOR MAGMATIC ORE DEPOSITS IN THE LIGHT OF Re-Os SYSTEMATICS |
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| Xiong Yongliang.THE ORE-FORMING MATERIALS FOR MAGMATIC ORE DEPOSITS IN THE LIGHT OF Re-Os SYSTEMATICS[J].Earth Science Frontiers,1994(4). |
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| Authors: | Xiong Yongliang |
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| Abstract: | The application of the Re-Os system into the typical magmatic ore deposits hasindicated the complex ore-forming sources for this type of deposits which used to be con-sidered to have been solelv derived from the mantle, The analvtical results from importantdeposits such as Bushveld,Sudbury,Noril'sk imply that they have a considerable portionof the crustal materials.The crustal materials may be incorporated into these deposits ei-ther by mixing/assimilation or hydrothermal processes. |
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| Keywords: | magmatic ore deposits ore-forming materials Re-Os system |
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