| 新县高压超高压榴辉岩及变质作用 |
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| 引用本文： | 张宗恒,任爱琴,侯海燕.新县高压超高压榴辉岩及变质作用[J].河南国土资源,2001(1). |
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| 作者姓名： | 张宗恒 任爱琴 侯海燕 |
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| 作者单位： | 河南省地质矿产勘查开发局!河南郑州450007(张宗恒，侯海燕)，河南省地质矿产勘查开发局第三地质调查队!河南信阳464000(任爱琴) |
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| 摘 要： | 大别造山带西段的新县高压超高压变质带中 ,分布着多种不同类型的榴辉岩。研究发现 ,尽管它们有着不同的峰变质条件 ,但都经历了相同的绿帘角闪岩相前进变质 ,具有相近的峰变质年龄和相似的退变质轨迹。其形成和折返可能与华北、扬子两大古陆在早奥陶世末的陆—陆碰撞有关。
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| 关 键 词： | 榴辉岩 P-T-t轨迹 新县 |
THE HIGH-PRESSURE ULTRAHIGH-PRESSURE ECLOGITE AND METAMORPHISM OF XINXIAN COUNTY |
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| ZHANG Zong heng ,REN Ai qin ,HOU Hai yan.THE HIGH-PRESSURE ULTRAHIGH-PRESSURE ECLOGITE AND METAMORPHISM OF XINXIAN COUNTY[J].Henan Land & Resources,2001(1). |
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| Authors: | ZHANG Zong heng REN Ai qin HOU Hai yan |
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| Institution: | ZHANG Zong heng 1,REN Ai qin 2,HOU Hai yan 1 |
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| Abstract: | In Xinxian high pressure ultrahigh pressure metamorphic zone of the west ern Dabie orogenic zone of China many types of eclogites have distributed. The study shows that they have all experienced the same epidote amphibolite facies metamorphism although their peak metamorphic conditions are different. Their peak metamorphic ages are very close and they have similar retrogressive metamorphism paths. The formation and exhumation of eclogites might be related to continent continent collision between the north China paleoland and the Yangtze paleoland in the end of early Ordovician. |
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| Keywords: | eclogite P T t path Xinxian County |
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