| 西藏白朗地区蛇绿岩火山岩中单斜辉石的化学特征 |
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| 引用本文： | 李达周,王风阁,张旗,周云生.西藏白朗地区蛇绿岩火山岩中单斜辉石的化学特征[J].地质科学,1984,0(2):149-156. |
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| 作者姓名： | 李达周 王风阁 张旗 周云生 |
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| 作者单位： | 1. 中国科学院地质研究所;2. 冶金部桂林地质研究所 |
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| 摘 要： | 近年来,应用岩石的地球化学和矿物学特征区分不同构造位置的现代火山岩,已被人们所注意。同时,根据这种观测资料所确定的一般特征,亦已广泛地应用于古火山岩,并获得了一些古地质环境的概念。
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| 关 键 词： | , |
| 收稿时间： | 1981-09-02 |
| 修稿时间： | 1981-09-02; |
CHEMICAL CHARACTERISTICS OF CLINOPYROXENES OF VOLCANIC ROCKS FROM THE OPHIOLITE AT BAINANG, TIBET |
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| Li Dazhou,Wang Fengge,Zhang Qi,Zhou Yunsheng.CHEMICAL CHARACTERISTICS OF CLINOPYROXENES OF VOLCANIC ROCKS FROM THE OPHIOLITE AT BAINANG, TIBET[J].Chinese Journal of Geology,1984,0(2):149-156. |
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| Authors: | Li Dazhou Wang Fengge Zhang Qi Zhou Yunsheng |
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| Institution: | 1. Institute of Geology, Aoademia Sinica, Beijing;2. Geological Institute, Ministry of Metallurgy, Guilin |
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| Abstract: | Bainang ophiolitic complex is part of Yarlung Zangbo ophiolite zone. 14 clinopyroxen-es from pillow lavas and sheeted dike swarms in Bainang ophiolitic complex have been analysed. They are characterized by higher Mg, poorer Ti, Al and Fe and lower Ti/Al ratio in composition. They are similar to host rocks that have both features of mid-oceanic ridge and island arc basalts. Perhaps, it was a tectonic setting of island arc-margin basin. Wider range and complexity of compositions shown by both of basaltic rocks and the clinopyroxenes suggest that these rocks are probably derived from different magma sources. |
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| Keywords: | , |
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