| 六盘山东麓断裂断层泥的组构特征及其意义 |
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| 引用本文： | 张秉良,向宏发,虢顺民,张晚霞.六盘山东麓断裂断层泥的组构特征及其意义[J].地震地质,2000,22(1):47-52. |
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| 作者姓名： | 张秉良 向宏发 虢顺民 张晚霞 |
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| 作者单位： | 中国地震局地质研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金!(4 96 72 149,4 9772 16 8)资助 |
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| 摘 要： | 本文采用宏观与微观相结合的方法 ,研究六盘山东麓断裂的滑动方式。结果表明 :(1)根据断层泥组构特征 ,六盘山东麓断裂可划分为北、中、南 3段 ,这与前人宏观分段结果相一致 ;(2 )北段断层泥局部强烈变形 ,发育牵引褶皱 ,吕德剪切角 (R1)介于 11°～ 2 6° ,以及伊利石无明显的优选方位组构 ,表明该段断层活动是以粘滑为主的左旋走滑运动 ;(3)中、南段断层泥普遍变形 ,吕德剪切角 (R1)一般小于 11° ,P叶理、带状褶皱和肠状构造发育 ,以及伊利石复杂的优选方位组构 ,显示该断层的活动是以蠕滑为主的多期逆冲滑动
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| 关 键 词： | 六盘山断裂 断层泥 组构 断层活动 |
THE FABRIC OF FAULT GOUGE FROM THE EASTERN LIUPANSHAN PIEDMONT FAULT ZONE AND THEIR IMPLICATION |
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| Zhang Bingliang,Xiang Hongfa,Guo Shunmin,Zhang Wanxia.THE FABRIC OF FAULT GOUGE FROM THE EASTERN LIUPANSHAN PIEDMONT FAULT ZONE AND THEIR IMPLICATION[J].Seismology and Geology,2000,22(1):47-52. |
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| Authors: | Zhang Bingliang Xiang Hongfa Guo Shunmin Zhang Wanxia |
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| Abstract: | The mode of slipping along the eastern Liupanshan piedmont fault zone is analyzed through both macroscopic and microscopic investigations. The results show that (1)this fault zone can be divided into north,middle and south three segments based on the characteristics of the fabric from fault gouge. This is consistent with the result from macroscopic along the fault zone in recent years.(2)local strong deformation, traction fold, Riedel shears angle ( R 1) being in the range of 11°～26°, P foliation and |
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| Keywords: | Liupanshan fault Fault gouge Fabric Fault activity |
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