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地球学报  2004 

地幔柱研究中几个问题的探讨及其找矿意义

Keywords: 地幔柱,判别原则,埃达克岩,成矿作用,峨眉地幔柱

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Abstract:

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。

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