| 青海尕龙格玛铜多金属矿区侵入岩特征及其控矿作用 |
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| 引用本文： | 冯志兴,李义邦.青海尕龙格玛铜多金属矿区侵入岩特征及其控矿作用[J].矿产与地质,2014(2):129-142. |
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| 作者姓名： | 冯志兴 李义邦 |
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| 作者单位： | 西部矿业股份有限公司,青海西宁810000 |
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| 摘 要： | 通过对尕龙格玛铜多金属矿区侵入体(花岗闪长岩和石英闪长岩)岩石学特征、岩体侵位年代、地球化学特征、岩浆演化过程进行分析研究,认为本区花岗闪长岩和石英闪长岩可能形成于后碰撞构造背景,岩体侵位时限定位印支期晚三叠世较为适宜,格仁涌花岗闪长岩属分异的I型花岗岩。本区侵入岩体可能为矿体的形成提供了持续的热动力条件,为成矿带来了部分成矿物质,岩浆侵入对本区铜多金属矿形成有明显控制作用。
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| 关 键 词： | 侵入岩 岩石特征 岩浆演化 控矿作用 |
Characteristics of intrusive rocks in Galonggema Cu polymetallic mine area and its ore-controlling function |
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| FENG Zhi-xing,LI Yi-bang.Characteristics of intrusive rocks in Galonggema Cu polymetallic mine area and its ore-controlling function[J].Mineral Resources and Geology,2014(2):129-142. |
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| Authors: | FENG Zhi-xing LI Yi-bang |
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| Institution: | (Western Mining Corporation, Xining, Qinghai 810000) |
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| Abstract: | Through analyzing petrologic characteristics,age of rock emplacement,geochemical characteris-tics,magma evolution process of the intrusive bodies （granodiorite and quartz diorite）in Galonggema Cu polymetallic mine area,this paper argues that the granodiorite and quartz diorite may be formed in post-colli-sion settings,and it should be appropriate to determine that the emplacement age is in late Triassic of Indo-chinese epoch,and granodiorite in Gerenyong should be differential type I granite.The intrusive rocks in the area may have provided thermo-motive for the formation of rock bodies,and have brought part of the metal-logenic materials for mineralization.The magmatic intrusion obviously controls the formation of Cu poly-metallic ores. |
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| Keywords: | intrusive rock petrologic characteristics magmatic evolution ore-controlling function |
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