| 吉林省通化地区早元古代变质杂岩变质变形作用与构造环境 |
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| 引用本文： | 胡大千.吉林省通化地区早元古代变质杂岩变质变形作用与构造环境[J].吉林大学学报(地球科学版),1996(2). |
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| 作者姓名： | 胡大千 |
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| 作者单位： | 长春地质学院地球化学系 |
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| 摘 要： | 通化地区早元古代变质杂岩可划分为集安岩群和老岭岩群。前者遭受了一期四个阶段的进变质作用和三幕变形作用，变质达高角闪岩相；后者主要经历的是一期两个阶段的进变质作用和二幕变形作用，变质达绿片岩相。两岩群变质作用的ｐ－Ｔ－ｔ轨迹都具有逆时针演化的趋势。本区大地构造环境属被动大陆边缘与古岛屿之间内海（边缘海，性质的古拗陷带和裂陷带。
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| 关 键 词： | 集安岩群，老岭岩群，p－T－t轨迹，构造环境 |
THE METAMORPHISM AND DEFORMATION OF EARLYPROTEROZOIC METAMORPHIC COMPLEX AND ITS TECTONIC ENVIRONMENT IN TONGHUA REGION, JILIN |
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| Hu Daqian.THE METAMORPHISM AND DEFORMATION OF EARLYPROTEROZOIC METAMORPHIC COMPLEX AND ITS TECTONIC ENVIRONMENT IN TONGHUA REGION, JILIN[J].Journal of Jilin Unviersity:Earth Science Edition,1996(2). |
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| Authors: | Hu Daqian |
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| Abstract: | The metamorphic complex in study area can be divided into ji'an rock group and Laoling rock group. The former underwent four stages of prograde metamorphism and three episodes of deformation during early Proterozoic. Highamphibolite facies metamorphism was recognized in this group.The later mainly underwentwo stages of metamorphism and two episodes of deformation in which green schist facies metamorphism was recognized.The metamorphic p-T-t-D paths are characterized by anti clockwise in both rock groups. It indicates a tectonic enviroriment of depression zone and rift zone which locates in the middle of a continent margin andislands. |
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| Keywords: | ji'an rock group Laoling rock group p-T-t path tectonicenvironment |
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