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| 滇西南大麦地锡矿区花岗闪长岩的地球化学特征 | |
| 引用本文： | 张晓永,彭润民,李忠烈,罗平辉,李景文,义爱文.滇西南大麦地锡矿区花岗闪长岩的地球化学特征[J].物探与化探,2012,36(4):567-572. |
| 作者姓名： | 张晓永 彭润民 李忠烈 罗平辉 李景文 义爱文 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京 100083;河南省有色金属地质勘查总院,河南 郑州 450052 2. 中国地质大学地球科学与资源学院,北京,100083 3. 河南省有色金属地质勘查总院,河南 郑州,450052 4. 河南省有色金属地质矿产局第七地质大队,河南 郑州,450018 |
| 基金项目： | 河南省2008年度地质勘查基金项目(HNDK2008-07)资助 |
| 摘 要： | 对大麦地锡矿区出露的云岭花岗闪长岩体地球化学特征进行了研究,岩石中Si02含量变化范围为60.25％～ 66.44％,平均值64.41％；K20含量为0.37％～ 4.39％,平均值3.07％；全碱(wK2o +wNa2o)为3.44％ ～ 11.47％,平均值5.92％；岩石铝指数(ACNK)平均值为2.62.大麦地锡矿区花岗闪长岩的地球化学特征表明,该岩石属于富硅、铝的高钾钙碱性系列花岗岩,全碱含量较高,Nb、Ta、Sr、P、Zr和Hf亏损,轻、重稀土元素分馏明显,显示一定程度的负铕异常,岩石处于挤压碰撞的构造环境中.从区域构造演化特征分析,这一结论与云岭岩体所处位置比较吻合. |
| 关 键 词： | 滇西南 云岭花岗闪长岩体 地球化学特征 稀土元素 构造环境 |
GEOCHEMICAL CHARACTERISTICS OF YUNLING GRANODIORITE IN THE DAMAIDI Sn ORE DISTRICT,SOUTHWEST YUNNAN |
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| ZHANG Xiao-yong , PENG Run-min , LI Zhong-lie , LUO Ping-hui , LI Jing-wen , YI Ai-wen.GEOCHEMICAL CHARACTERISTICS OF YUNLING GRANODIORITE IN THE DAMAIDI Sn ORE DISTRICT,SOUTHWEST YUNNAN[J].Geophysical and Geochemical Exploration,2012,36(4):567-572. | |
| Authors: | ZHANG Xiao-yong PENG Run-min LI Zhong-lie LUO Ping-hui LI Jing-wen YI Ai-wen |
| Institution: | 1.School of Earth Sciences and Resource,China University of Geosciences,Beijing 100083,China;2.Henan Institute of Non-ferrous Metal Exploration,Zhengzhou 450052,China;3.No.7 Geological Party,Henan Bureau of Geology and Nonferrous Metals Mineral Resources,Zhengzhou 450018,China) |
| Abstract: | Geochemical characteristics of Yunling granodiorite in the Damaidi Sn ore district were studied in this paper.SiO2 content varies in the range of 60.25%～66.44%,64.41% on average;K2O content is 0.37%～4.39%,3.07% on average;wK2O+wNa2Ocontent is 3.44%～11.47%,5.92% on average.ACNK of the rock is 2.62 on average.The granodiorite belongs to the high-K calc-alkaline and aluminum saturation series,characterized by the depletion of Nb,Ta,Sr,P,Zr and Hf.Based on trace elements diagrams,the authors found that there exist obvious magmatic differentiation and negative Eu anomaly,suggesting that Yunling granodiorite belongs to syncollision granite. |
| Keywords: | southwestern Yunnan Yunling granodiorite geochemical characteristics REE tectonic environment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |