| 云南金沙江蛇绿岩的地球化学特征及其成因的初步研究 |
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| 引用本文： | 韩 松,贾秀勤,黄忠祥,董金泉,张 旗,陈 雨,李秀云.云南金沙江蛇绿岩的地球化学特征及其成因的初步研究[J].岩石矿物学杂志,1996,15(3):203-212. |
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| 作者姓名： | 韩 松 贾秀勤 黄忠祥 董金泉 张 旗 陈 雨 李秀云 |
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| 作者单位： | 中国科学院高能物理研究所，中国科学院地质研究所 |
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| 摘 要： | 本文报道了出露于云南省德钦县白马雪山、书松、共卡及吉义独地区的金沙江蛇绿岩的地球化学特征。该蛇绿岩各岩石单元均为ＬＲＥＥ富集型。文中讨论了金沙江蛇绿岩的成因及其形成的构造环境，指出该区玄武岩的微量元素和ＲＥＥ分布可用ＮＭＯＲＢ与ＯＩＢ的混合来解释，推测形成于类似现今冰岛的扩张脊与地幔热柱重叠的构造环境
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| 关 键 词： | 云南 金沙江 蛇绿岩 地球化学 岩石 成因 构造 环境 |
A Preliminary Geochemical and Genetic Study of Jinsha River Ophiolites, Yunnan Province |
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| Abstract: | The present paper describes geochemical characteristics of Jinsha River ophiolites in Baimaxueshan, Shusong, Gongka and Jiyidu areas of Deqen County. Verious rocks assemblages of the ophiolites are exclusively of LREE-enriched patterns, and their genesis and tectonic setting are discussed here. It is pointed out that the trace element and REE characteristics of basalts could be interpreted by mixing N-MORB with OIB, and that Jinsha River Ophiolites were probably formed in a tectonic environment characterized by the superimposition of spreading ridge and mantle plume, similar to things of Iceland. |
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| Keywords: | Jinsha River ophiolite geochemistry genesis of rocks tectonic setting |
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