| 青藏高原大同西侧石英二长岩体地球化学及岩石系列 |
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| 引用本文： | 姜耀辉,杨万志.青藏高原大同西侧石英二长岩体地球化学及岩石系列[J].地球化学,1999,28(6):542-550. |
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| 作者姓名： | 姜耀辉 杨万志 |
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| 作者单位： | [1]中国地质科学院南京地质矿产研究所 [2]新疆物化探大队 |
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| 基金项目： | 原地质矿产部“九五”资源与环境科技攻关项目!95－02-010 |
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| 摘 要： | 大同西侧石英二长岩体位于青藏高原西北缘、西昆仑山主峰地带，形成于早古生代。其地质、地球化学研究表明，岩体岩石组合类型为（石英）二长闪长岩－（石英）二长岩－石英正长岩。岩石主要由斜长石、微斜长石、石英、角闪石、辉少量黑云母组成。岩石化学成分富碱、富钾、Ｋ２Ｏ／ＮａＯ比值大而贫铁，微量元素富集Ｒｂ、Ｓｒ、Ｂａ特闫离子亲石元素和轻稀土元素，属于钾玄岩系列。
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| 关 键 词： | 石英二长岩 地球化学 岩石系列 青藏高原 |
Geochemistry and rock series of quartz monzonite intrusion in west-side of Datong on Qinghai-Xizang Plateau |
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| Jiang Yaohui, Guo Kunyi, He Jurui, Rui Xingjian, Yang Wanzhi.Geochemistry and rock series of quartz monzonite intrusion in west-side of Datong on Qinghai-Xizang Plateau[J].Geochimica,1999,28(6):542-550. |
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| Authors: | Jiang Yaohui Guo Kunyi He Jurui Rui Xingjian Yang Wanzhi |
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| Abstract: | Quartz monzonite intrusion in west-side of Datong is situated in the center of the WestKunlun Mts. on the northwestern Qinghai-Xizang Plateau and was intmded in early PaleozoicEra. Geological and geochemical characteristics indicate that rock assemblage type of themassif is (quartz) monzodiorite-(quartz) monzonite-quartz syenite. The rocks consist ofplagioclase, microcline, quartz, hornblende, pyroxene and a bit of biotite. Chemicalcompositions are characterized by alkali-rich, high content of potassium with high value ofK2O/Na2O, LILE-rich, LREE-rich and low content of iron. All above indicate that its rockseries is shoshonite. |
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| Keywords: | quartz monzonite geochemistry rock series Qinghai-Xizang Plateau |
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