| 滇西镇康木厂A型花岗岩岩石学及地球化学特征 |
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| 引用本文： | 顾影渠,钱天宏,叶芝珊,颜以彬. 滇西镇康木厂A型花岗岩岩石学及地球化学特征[J]. 岩石矿物学杂志, 1988, 7(1): 38-48 |
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| 作者姓名： | 顾影渠 钱天宏 叶芝珊 颜以彬 |
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| 作者单位： | 云南区域地质调查队(顾影渠，钱天宏，叶芝珊)，昆明工学院地质系(颜以彬) |
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| 摘 要： | 木厂A型花岗岩是由钠闪英碱正长岩、钠闪花岗岩,霓石花岗岩组成的复式岩 体。其形成与裂谷作用有关。岩体分异程度高,以高碱、高铁,贫镁、钙,稀土元素丰度高,轻稀土强烈分馏和明显的负铕异常为特征。 木厂A型花岗岩与上二叠统火山岩系具同源性,乃玄武岩浆与陆壳局部重熔岩浆的混合物。
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| 关 键 词： | A型花岗岩 钠闪石花岗岩 裂谷作用 |
The Petrographic and Geochemical Characteristics of the Muchang A-type Granite in Zhenkang, Western Yunnan |
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| Gu Yingqu Qan Tianhong Ye Zhisan. The Petrographic and Geochemical Characteristics of the Muchang A-type Granite in Zhenkang, Western Yunnan[J]. Acta Petrologica Et Mineralogica, 1988, 7(1): 38-48 |
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| Authors: | Gu Yingqu Qan Tianhong Ye Zhisan |
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| Abstract: | The Muchang A-type granite is a composite intrusive body consisting of the riebeckite nordmarkite, riebeckite granite and aegirine granite. Its formation related to riftogenesis. The differential degree of the body is rather high: rich in alkali and Fe, poor in Mg and Ca. The abundance of REE is relatively high. The fractionation of LREE is very intense and with the evident negntive ano- maly of Eu.The Muchang A-type granite is a congeneric product with the Upper Permian volcanic sequences formed by the mixing of basaltic magma and partial anatectic magma of the continental crust. |
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| Keywords: | A-type granite riebeckite granite riftogenesis |
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