| 白云鄂博辉长岩 |
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| 引用本文： | 胡辅佑,王凯怡,孟庆昌.白云鄂博辉长岩[J].地质科学,1988,0(3):259-271. |
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| 作者姓名： | 胡辅佑 王凯怡 孟庆昌 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 包头钢铁公司白云鄂博铁矿 |
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| 摘 要： | 白云鄂博辉长岩类包括淡辉长岩—辉长岩—碱性辉长岩。它们是由岩浆结晶分异过程形成的一套系列。在岩浆演化晚期阶段有碱金属和大离子亲石元素及轻稀土的一定程度的富集。
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| 关 键 词： | 白云鄂博辉长岩 钙碱系列 岩浆演化趋势 |
| 收稿时间： | 1987-02-01 |
| 修稿时间： | 1987-02-01; |
BAIYUN-OBO GABBRO |
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| Hu Fuyou Wang Kaiyi.BAIYUN-OBO GABBRO[J].Chinese Journal of Geology,1988,0(3):259-271. |
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| Authors: | Hu Fuyou Wang Kaiyi |
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| Institution: | 1. Institute of Geology, Academia Sinica, Beijing;2. Baiyun-Obo Iron Mine, Bao Tou Steel-Iron Company |
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| Abstract: | Bayan-Obo gabbros which are engulfed and enclosed by the granites outcrop are located very near the Bayan-Obo Deposits. The gabbros have relatively high Al content (19%) and belong to calc-alkaline series. It is believed that the different types of gabbro including leuco-gabbro-gabbro-alkaline gabbro are related to each other by fractional crystallization. The early precipitating phase is ieucogabbro, the later is alkaline gabbro. Therefore, the alkali and LIL (including LREE) show a trend of increasing contents with fracdonation of magma. |
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| Keywords: | Bayan-Obo gabbro calc-alkaline series evolution trend of magma |
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