| 歪石砬子变粒岩构造演化序列 |
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| 引用本文： | 纪春华.歪石砬子变粒岩构造演化序列[J].吉林地质,1998,17(4):45-48. |
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| 作者姓名： | 纪春华 |
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| 作者单位： | 吉林地勘局区域地质矿产调查所 |
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| 摘 要： | 歪石砬子变粒岩为早元古代变质岩，因经历了多期变形的叠加与改造，岩石构造非常复杂，可划分为四期变形，由区域变质变形，层间韧性剪切带，开阔褶皱和单向膝折带组成构造演化序列，前两期变形属中浅部构造层次变形，后两期变形属表浅部构造层次变形；构造应力场由近南北向挤压转为近东西向挤压。
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| 关 键 词： | 歪石砬子变粒岩 构造演化序列 构造层次 变质岩 |
THE TECTONIC EVOLUTIONARY SERIES OF WAISHILAZI METACONGLOMERATE |
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| Ji Chunhua.THE TECTONIC EVOLUTIONARY SERIES OF WAISHILAZI METACONGLOMERATE[J].Jilin Geology,1998,17(4):45-48. |
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| Authors: | Ji Chunhua |
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| Abstract: | The Waishilazi metaconglomerate is early Proterozoic metamorphic rock,because of the super-position and transformation as the multiple phases of deformation,rock structures are very complicated;it could be divided into 4 stage deformations,the tectonic evolutionary series was formed by the regional geologic deformation,interlayer ductile shear belt,broad fold and unilateral kink band.Two former deformations belong to mid-shallow structural deformation,and the later ones belong to surface-shallow structural deformation;the compression deformation of tectonic stress field is from NS to nearly WE trending. |
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| Keywords: | Waishilazi metaconglomerate Tectonic evolutionary series Structural gradation Deformational mechanism |
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