| 川滇地区某纯橄榄岩地质特征 |
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| 引用本文： | 王方国.川滇地区某纯橄榄岩地质特征[J].矿物岩石,1990,10(1):61-69,T004. |
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| 作者姓名： | 王方国 |
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| 作者单位： | 冶金工业部成都地质调查所 双流 |
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| 摘 要： | 本文对川滇地区某纯橄榄岩体的地质特征进行了初步研究。该岩体的岩石新鲜，几乎没有蛇纹石化。岩体具层状构造，岩石中发育扭折带、巨晶、碎斑、等粒镶嵌结构、板块镶嵌结构等特殊的地幔岩结构构造。此外，岩石化学及地球化学特征了都表明该纯橄榄岩体属于蛇绿岩层序中堆积的一个组成部分。
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| 关 键 词： | 纯橄榄岩 地幔岩结构 堆积岩 蛇绿岩 川滇地区 化学成分晶胞参数 |
GEOLOGIC CHARACTERISTICS FOR A DUNITE BODY FROM SICHUAN-YUNNAN AREA |
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| Wang Fangguo.GEOLOGIC CHARACTERISTICS FOR A DUNITE BODY FROM SICHUAN-YUNNAN AREA[J].Journal of Mineralogy and Petrology,1990,10(1):61-69,T004. |
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| Authors: | Wang Fangguo |
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| Abstract: | This paper deals with the geological characteristics of a dunite body with layering structure from Sichuan-Yunnan area. The dunnite is so fresh and without serpentinite that we can find out some special texture in it,such as kink band,great crystal,mortar texture,granulitic mosaic texture,platy mosaic texture. These textures are typical for pyrolite. Petrochemistry and geochemistry of the dunite have been studied too. It is indicated by many evidences that the dunite body belongs to a part of ultramafic cumulatres in the seguence of ophiolite. |
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| Keywords: | dunite textures of pyrolite cumulate ophiolite |
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