| 地幔柱研究中几个问题的探讨及其找矿意义 |
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| 引用本文：王登红,李建康,刘峰,陈振宇.2004.地幔柱研究中几个问题的探讨及其找矿意义[J].地球学报,25(5):489-494. |
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| 基金项目:国家重点基础发展规划973项目(编号:G1999043203课题);国土资源部百名优秀青年科技人才计划项目;地质调查项目(工作内容编号200310200002);国家科技攻关项目 |
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| 中文摘要:本文在简要回顾地幔柱研究历史的基础上，针对近年来研究中提出的一些科学问题进行初步的探讨，提出了识别古老地幔柱的地质一环境一地球化学综合判别原则，提出了存在地幔柱的第3种类型，而埃达克岩很可能是第3类地幔柱的典型产物之一，指出了地幔柱对于成矿作用影响的双重性，也指出了地幔柱研究将对成矿学研究产生深刻的影响及其对于地质找矿的意义。中国西南部地区以二叠纪峨眉山玄武岩为标志的峨眉地幔柱最终喷发于海陆过渡相环境，具有与俄罗斯西伯利亚地幔柱类似的成矿条件和含矿性，有着良好的找矿前景。 |
| 中文关键词:地幔柱 判别原则 埃达克岩 成矿作用 峨眉地幔柱 |
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| Some Problems Related to Mantle Plume and Their Significance in Ore Prospecting |
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| Abstract:Following a review on the history of mantle plume research and a discussion on some problems related to mantle plume, this paper puts forward a comprehensive geological-environmental-geochemical principle for discrimination ofancient mantle plume. It is also pointed out that geological evidence is more important than geochemical evidence, especially for the plumes located in a complexsetting of slab subduction. The plumes located beneath the subduction area of aplate can have other features besides those of the plumes located beneath the continental crust or ocean crust. They are characterized by some special geological records like adakites, because they have been affected by different materialand energy sources from both continental and oceanic crusts. Mantle plume can play an important role in large-scale mineralization, but can also destroy ancientdeposits formed before the eruption of flood basalts. The Emei mantle plume, which erupted in a transitional environment with marine in the west and continentin theeast, has features similar to those of the Siberian plume, suggesting a good potential in search for mineral deposits. |
| keywords:mantle plume discrimination principle adakite mineralization Emei plume |
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