| 大理点苍山正片麻岩初步研究 |
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| 引用本文： | 沙绍礼,刘宇淳.大理点苍山正片麻岩初步研究[J].云南地质,2001,20(3):260-269. |
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| 作者姓名： | 沙绍礼 刘宇淳 |
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| 作者单位： | 云南省地质矿产勘查开发局第三地质大队,云南,大理,671000 |
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| 摘 要： | 点苍山正片麻岩分为两类：斜长片麻岩和花岗片麻岩。前者属岛孤火山岩，形成于中晚元古代。二者主要化学组分具相关性，花岗片麻岩是由早形成的斜长片麻岩、斜片角闪岩经深熔作用而成。
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| 关 键 词： | 正片麻岩 岛弧火山岩 碰撞花岗岩 大理点苍山 元古代 化学组分 |
| 文章编号： | 1004-1885(2001)03-0260-010 |
| 修稿时间： | 2001年2月20日 |
A PRELIMINARY STUDY ON THE ORTHOGNEISS OF DIANCANG MOUNTAIN, DALI |
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| SHA Shao li,LIU Yu chun.A PRELIMINARY STUDY ON THE ORTHOGNEISS OF DIANCANG MOUNTAIN, DALI[J].Yunnan Geology,2001,20(3):260-269. |
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| Authors: | SHA Shao li LIU Yu chun |
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| Abstract: | The orthogneiss of Diancang Mountain can be divided into 2 types, ie plagiogneiss and granogneiss. The former belongs to an island arc volcanic rock and was formed in early Proterozoic whereas the latter is a collision granite and formed in middle late Proterozoic, which are correlated in the main chemical composition. The granogneiss is formed by the anatexis of the earlier plagiogneiss and plagioclase amphibolite. |
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| Keywords: | Gneiss Island Arc Volcanic Rock Collision Granite Diancang Mountain Dali |
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