| 白云鄂博辉长岩的稀土含量 |
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| 引用本文： | 王凯怡,杨瑞英.白云鄂博辉长岩的稀土含量[J].地质科学,1983,0(2):195-198. |
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| 作者姓名： | 王凯怡 杨瑞英 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 中国科学院高能物理研究所 |
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| 摘 要： | 本区辉长岩沿宽沟背斜南翼分布,多被海西期花岗岩切割或包裹。在主矿以南和东部接触带都有分布。本次研究中,选择了三种不同类型的辉长岩作了稀土总含量和单一稀土元素含量的分析。第一种是主矿南部铁路附近距花岗岩最近的矿物颗粒较细的边缘相辉长岩(B2);第二种是距花岗岩较远的属于中心相的辉长岩(B1);第三种是东部接触带炸药库附近斜长石含量增多的较粗粒辉长岩。
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| 关 键 词： | , |
| 收稿时间： | 1982-01-20 |
| 修稿时间： | 1982-01-20; |
THE CONTENT OF RARE EARTH ELEMENTS IN GABBRO FROM BAYAN OBO,INNER MONGOLIA |
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| Wang Kaiyi,Yang Ruiying.THE CONTENT OF RARE EARTH ELEMENTS IN GABBRO FROM BAYAN OBO,INNER MONGOLIA[J].Chinese Journal of Geology,1983,0(2):195-198. |
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| Authors: | Wang Kaiyi Yang Ruiying |
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| Institution: | 1. Institute of Geology, Academia Sinica, Beijing;2. Institute of High Energy Physics, Academia Sinica Beijing |
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| Abstract: | The content of rare earth elements (REE) in gabbros from Bayan Obo has been determined by neutron activation analysis.The alkali gabbros are characterized by high rare earth contents and negative Eu anomaly,the Leuco-gabbros are characterized by low REE and positive Eu anomaly,whereas the gabbros from the marginal facies have the REE pattern falling between those of alkali gabbros and leuco-gabbros and lack prominent Eu anomaly.These indicate that the rocks are comagmatic.The REE distribution fractionation pattern of marginal facies gabbros are regarded as representative of the parent magma,whereas the alkali gabbros and leuco-gabbros are related to crystalline fractionation,and represent residual melt and cumulates,respectively. |
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| Keywords: | , |
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