| 黔西盘关向斜构造特征及其力学分析 |
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| 引用本文： | 陈学敏.黔西盘关向斜构造特征及其力学分析[J].中国煤炭地质,2008,20(4):11-16. |
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| 作者姓名： | 陈学敏 |
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| 作者单位： | 陈学敏（贵州省煤田地质局,贵州,安顺,561000） |
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| 摘 要： | 运用地质、力学观点分析了黔西盘关向斜燕山期发生的正、反扭动构造特征、成因及其复合叠加现象，认为它们是该区煤田后期改造的主要控制构造，是欧亚板块、太平洋板块和印度洋板块相互运动的结果。自北向南运动的欧亚板块与自南向北运动的太平洋板块，两者作反时针直扭运动，产生北西、南东向挤压形成北东向褶皱（压性结构面）与北西、南东向张性结构面以及两组扭性结构面；自北向南运动的欧亚板块与自南向北的印度洋板块，两者的顺时针直扭运动，又产生了北东、南西向挤压，形成北西向褶皱（压性结构面）与北东向张性结构面以及两组扭性结构面。正、反扭动构造产生两种复合叠加方式：一是地层不发生偏转的简单叠加形式；二是后期顺时针扭动构造导致先期反时针扭动构造发生偏转，这与该区内岩石地层裂隙、断裂和构造形变特征相一致。
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| 关 键 词： | 扭动构造 形成机制 构造复合 黔西 |
| 文章编号： | 1674-1803(2008)04-0011-06 |
Western Guizhou Panguan Syncline Structural Features and Its Mechanic Analysis |
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| Chen Xuemin.Western Guizhou Panguan Syncline Structural Features and Its Mechanic Analysis[J].Coal Geology of China,2008,20(4):11-16. |
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| Authors: | Chen Xuemin |
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| Institution: | Chen Xuemin (Guizhou Bureau of Coal Geological Exploration, Anshun, Guizhou 561000) |
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| Abstract: | Analyzed western Guizhou Panguan syncline Yanshanian stage forward and reverse shear structural features, genesis and their compounding stacking phenomenon, took advantage of geological and mechanical points of view. Considered that they are main controlling structures after coalfield succeeding deformation, and is a result of Eurasian, Pacific and Indian Ocean plates＇ interactive movement. Moving from north to south Eurasian plate and moving from south to north Pacific plate both had happened counter clockwise forward shearing after they were met together produced NW and SE compression and formed NE trend folds （compressive structural plane） and NW, SE trend tensional structural planes and two sets of shearing structural planes; clockwise forward shearing happed on moving from north to south Eurasian plate and moving from south to north Indian Ocean plate, their NE-SW trend compression produced NW trend folds （compressive structural plane） and NE trend tensional structural plane and two sets of shearing structural planes. Forward and reverse shearing structures produced two compounding stacking modes： one is simple stacking mode in which no strata deflection happed; another is succeeding clockwise shearing structures caused previous counter clockwise shearing structures deflection, in accordance with rock, strata fissure, fracture and structural deformation features in the area. |
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| Keywords: | shear structure formation mechanism compounding of structures western Guizhou |
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