| 中国西天山东段的构造层次研究 |
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| 引用本文： | 崔可锐.中国西天山东段的构造层次研究[J].安徽地质,1996(4). |
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| 作者姓名： | 崔可锐 |
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| 作者单位： | 合肥工业大学资源与环境科学系 |
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| 摘 要： | 西天山东段的构造变形分为三个构造层次。即：深部构造层次、中部构造层次和浅部构造层次。深部构造层次以韧性剪切，塑性压扁，顶界劈理发育为特征，应变强度平均为１．０３．压缩量平均为６３％。中部构造层次以等厚褶皱，同斜倒转褶皱和逆冲推覆断层为主的脆韧性变形为特征，断层总体为叠瓦扇状逆冲断层系。该层次的应变强度平均为０．６７，压缩量平均为４４％。浅部构造层以宽缓的断层转折褶皱，断层传播褶皱及造山带向盆地仰冲为主的脆性变形为特征，断层伴有大量的水平走滑。该层次的应变强度平均为０．２８，压缩量平均为２４％。
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| 关 键 词： | 构造变形 应变强度 压缩量 深部构造层次 中部构造层次 浅部构造层次 |
A STUDY ON TECTONIC LEVELS IN THE EAST SECTOR OF WESTERN TIANSHAN, CHINA |
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| Cui Kerui.A STUDY ON TECTONIC LEVELS IN THE EAST SECTOR OF WESTERN TIANSHAN, CHINA[J].Geology of Anhui,1996(4). |
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| Authors: | Cui Kerui |
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| Abstract: | The tectonic deformation on the east sector of the Western Tianshan may be divided into three tectonic levels,i.e,deep- seated,middle- seated and shallow- seated tectonic level.The deformation of ductile shearing and plastic flattening characterized deep-seated tectonic level,with strain strength being 1.03 and compressd coefficient 63% in average.Cleavages are developed on its upper boundary.The brittle-ductile deformation of isopach fold isoclinal overturned fold and thrust fault was dominant in middle-seated tectonic level,with average strein strength 0.67,compression coefficient 44% and imbricate fan-shaped thrust fault system.The brittle deformation of fault- bend and fault-propagation folding took place in shallow- seated tectonic level,with average strain strength 0.28 and compression coefficient 24%.The orogen obducted toward basin along fault with large strike-slip movement. |
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| Keywords: | tectonic deformation strain strength compression coeffieient deep-seated tectonic level middle-seated tectonic level shallow- seated tectonic level |
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