| 罗布莎蛇绿岩地幔橄榄岩同位素特征及其成因 |
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| 引用本文： | 程学展,夏斌,李建峰,于漫,钟立峰,黄强太,施秋华.罗布莎蛇绿岩地幔橄榄岩同位素特征及其成因[J].大地构造与成矿学,2011,35(1):85-94. |
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| 作者姓名： | 程学展 夏斌 李建峰 于漫 钟立峰 黄强太 施秋华 |
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| 作者单位： | 程学展,CHENG Xuezhan(中国地质大学(北京)地球科学与资源学院,北京,100083);夏斌,XIA Bin(中山大学,海洋学院,广东,广州,510275;中国科学院,广州地球化学研究所,广东,广州,510640);李建峰,钟立峰,黄强太,施秋华,LI Jianfeng,ZHONG Lifeng,HUANG Qiangtai,SHI Qiuhua(中国科学院,广州地球化学研究所,广东,广州,510640);于漫,YU Man(兰州大学,资源环境学院,甘肃,兰州,730000) |
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| 摘 要： | 罗布莎蛇绿岩岩石单元出露齐全,以地幔橄榄岩为主,构造变形强烈;在堆积杂岩中上部产出有仰冲型斜长花岗岩小岩块;辉绿岩以脉状形式产出于地幔橄榄岩的方辉橄榄岩中;壳层岩石相对很薄且比较复杂.Sr、Nd和Pb同位素组成研究表明:罗布莎地幔橄榄岩绝大多数样品具有高ISr值(0.705489～0.714625);低INd值(0.5...
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| 关 键 词： | 罗布莎 地幔橄榄岩 Sr、Nd、Pb同位素 Dupal异常 |
Sr-Nd-Pb Isotopic Characteristics and Origin of the Mantle Peridotites from the Luobusha Ophiolite |
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| CHENG Xuezhan,XIA Bin,LI Jianfeng,YU Man,ZHONG Lifeng,HUANG Qiangtai,SHI Qiuhua.Sr-Nd-Pb Isotopic Characteristics and Origin of the Mantle Peridotites from the Luobusha Ophiolite[J].Geotectonica et Metallogenia,2011,35(1):85-94. |
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| Authors: | CHENG Xuezhan XIA Bin LI Jianfeng YU Man ZHONG Lifeng HUANG Qiangtai SHI Qiuhua |
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| Institution: | CHENG Xuezhan1,XIA Bin2,3,LI Jianfeng3,YU Man4,ZHONG Lifeng3,HUANG Qiangtai3 and SHI Qiuhua3(1.School of the Earth Sciences and Resources,China University of Geosciences,Beijing 100083,2.Marine College of Sun Yat-Sen University,Guangzhou 510275,Guangdong,China,3.Institute of Guangzhou Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,4.College of Earth and Environmental Science,Lanzhou University,Lanzhou 730000,Gansu,China) |
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| Abstract: | The Luobusha ophiolite consisting of a complete ophiolite sequences,is located in the eastern segment of the Yarlung Zangpo suture zone. It is characterized by the occurrence of the strongly deformed mantle peridotites,obduction type plagiogranites in the upper part of the cumulate sequence,diabasic dikes intruded the peridotites; and thin complicated crustal lavas. Isotopic study of the Luobusha peridotites reveals that the rocks are characterized by high initial 87Sr/86Sr (0.705489~0.714625),low initial 1... |
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| Keywords: | Luobusha mantle peridotite isotope Dupal anomaly |
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