| 1985年乌恰7.4级地震形变带 |
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| 引用本文： | 冯先岳,栾超群,李军,张勇. 1985年乌恰7.4级地震形变带[J]. 地震地质, 1988, 10(2): 39 |
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| 作者姓名： | 冯先岳 栾超群 李军 张勇 |
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| 作者单位： | 新疆维吾尔自治区地震局(冯先岳，栾超群，李军)，新疆维吾尔自治区地震局(张勇) |
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| 摘 要： | 1985年乌恰7.4级地震在克孜勒苏河谷阶地上出现地表形变带,主要由地震陡坎、地震断层、地裂缝与挤压脊等形迹组成。长约15公里,最宽达800米。分布形态为一向东北突出的弧形形变带。逆断层走向近东西,倾向160°—210°,倾角30°左右,最大水平倾向断距约2米。正走滑断层走向340°—350°,倾向北东,倾角80°—88°,最大右旋水平位错为1.55米。走滑逆断层走向为280°—305°。倾向西南,倾角30°左右,最大右旋水平位移1.25米。挤压脊多呈东西向分布,最大缩短距离为0.4米
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| 关 键 词： | 新疆 乌恰 地震形变带 断层 |
THE DEFORMATION ZONE OF WUQIA EARTHQUAKE OF M = 7.4 IN 1985 |
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| Feng Xian-yue,Luan Chao-qun,Li Jun and Zhang Yung. THE DEFORMATION ZONE OF WUQIA EARTHQUAKE OF M = 7.4 IN 1985[J]. Seismology and Geology, 1988, 10(2): 39 |
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| Authors: | Feng Xian-yue Luan Chao-qun Li Jun Zhang Yung |
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| Affiliation: | The Seissnological Bureau of Xinjiang Uygur Autonomous Region |
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| Abstract: | A deformation zone on the earth's surface along terrace in the Kezilesu River valley was formed by Wuqia earthquake of magnitude 7.4 in 1985. It is mainly composed of seismic scarps, seismic faults, fissures and the pressure ridges, etc. The length of the deformation zone is about 15 kilometres and the maximum width is 800 metres. The deformation zone extends in the direction of nearly east-west in the western part, and of 310-320℃ in the eastern part. The general distributional characteristic of this zone is a deformed arch which projects to northeast. The seismic fault is of different properties at the different section of the deformation zone. The thrust fault strikes to east-west and the fault plane dips to 160-210° with the angle of 30°. The maximum horizontal dip slip is about 2 metres. The normal-strike-slip fault strikes to 340-350° and fault plane dips to northeast with angle of 80-88°. The maximum right lateral offset is 1.55 metres. The strike-slip-thrust fault strikes to 2 |
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| Keywords: | Xinjiang Wuqia Deformabion zone of earthquake. Faults |
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