| 五台山早元古代高压变质作用研究 |
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| 引用本文： | 俞良军,王凯怡,等.五台山早元古代高压变质作用研究[J].岩石学报,2001,17(2):301-313. |
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| 作者姓名： | 俞良军 王凯怡 |
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| 作者单位： | 中国科学院地质与地球物理研究所岩石圈构造演化开放实验室,北京,100029 |
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| 基金项目： | 本文得到国家自然科学基金(编号:49973004)项目资助. |
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| 摘 要： | 根据对原五台群北金刚库组变质作用的深入研究，表明它们经历了三期变质作用，即经历了弧陆碰撞导致的初始的构造埋藏变质作用（M1）以及随后深埋到42km深度的峰期高压变质作用（M2）,压力可达0．8－1．4GPa，随后经历了快速抬升所导致的近等温的降压过程（M3）到0．5－0．7GPa，整个过程为顺时针方向演化的P－T轨迹，与造山带型P－T－t轨迹型式相同。
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| 关 键 词： | 高压变质作用 顺时针P－T轨迹 五台山 早元古代 山西 金岗库组 |
| 修稿时间： | 2000年11月9日 |
Early Proterozoic high-pressure metamorphism in the Wutaishan. |
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| YU LiangJun,WANG KaiYi,WANG ZhiHong,LI JiLiang and FANG AiMinInstitute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China.Early Proterozoic high-pressure metamorphism in the Wutaishan.[J].Acta Petrologica Sinica,2001,17(2):301-313. |
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| Authors: | YU LiangJun WANG KaiYi WANG ZhiHong LI JiLiang and FANG AiMinInstitute of Geology and Geophysics Chinese Academy of Sciences Beijing China |
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| Abstract: | The detailed study of metamorphism from the original North Jingangku Formation of the Wutai Group indicates three metamorphic evolutionary stages: initial tectonic burial metamorphism (M1) probably related to collision between island arc and continent, subsequent high pressure metamorphism (M2) extending 0.8~1.4GPa down to a depth of 42km from the peak metamorphism in response to crustal tectonic thickening, and isothermal decompression process (M3) as a result of rapid exhumation. A clockwise P T evolutionary path is similar to the P T t path of the typical orogenic belt. |
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| Keywords: | High pressure metamorphism Clockwise P T path Wutaishan |
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