| 闽北政和地区晋宁期变质岩系的变形变质作用 |
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| 引用本文： | 孙德有,赵国春,贺同兴.闽北政和地区晋宁期变质岩系的变形变质作用[J].吉林大学学报(地球科学版),1993(4). |
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| 作者姓名： | 孙德有 赵国春 贺同兴 |
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| 作者单位： | 长春地质学院地质系
(孙德有，赵国春)，长春地质学院地质系(贺同兴) |
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| 摘 要： | 政和地区变质岩石形成于晋宁期,遭受了四期复杂的构造变形作用。其中,D_1、D_2和D_3发生于晋宁期。D_2期形变造就了区域性宏观面理构造和松源复背斜,岩石面理产状不代表原始沉积层理,属轴面叶理。D_4期变形为后期加里东运动的产物。变质岩石由绿泥石—黑云母带、石榴石带、十字石带和矽线石带组成一个热背斜式递增变质带,热背斜形态接近于松源复背斜。本区晋宁期变质作用可分为早期、主期和晚期三个变质阶段,各变质带的PTD轨迹均为顺时针,类似于陆—陆碰撞造山带的PTt轨迹。
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| 关 键 词： | 构造变形 变质作用 PTD轨迹 晋宁期 |
A STUDY OF DEFORMATION AND METAMORPHISM OF JINNING PERIOD OF METAMORPHIC ROCKS IN ZHENGHE AREA,NORTHERN FUJIAN |
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| Sun Deyou Zhao Guochun He Tongxing.A STUDY OF DEFORMATION AND METAMORPHISM OF JINNING PERIOD OF METAMORPHIC ROCKS IN ZHENGHE AREA,NORTHERN FUJIAN[J].Journal of Jilin Unviersity:Earth Science Edition,1993(4). |
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| Authors: | Sun Deyou Zhao Guochun He Tongxing |
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| Institution: | Department of Geology |
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| Abstract: | The metamorphic rocks formed in Jinning period in Zhenghe area, northern Fujian province, encountered four times of complex deformations. Among them, D1, D2 and D3 took place in Jinning period. The regional foliation and Songyuan anticline were formed by deformation D2. The foliation of rocks does not represent the original stratification and belongs to axial foliation. The deformation D4 resulted from Caledonian movement. A thermal anticline - formed progressive metamorphic belt comprises chlorite-biotite, garnet,staurolite and sihlimanite zones. The metamorphism can be classified into three stages of the early stage, the peak stage and the later stage. The PTt paths in the different metamorphic belts are clockwise, and similar to the PTt path of collision orogen between continents. |
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| Keywords: | deformation metamorphism PTD path Jinning period |
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