| 甘肃文县北部北东东向断裂带新构造活动特征 |
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| 引用本文： | 卢海峰,马保起,刘光勋.甘肃文县北部北东东向断裂带新构造活动特征[J].地震研究,2006,29(2):143-146. |
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| 作者姓名： | 卢海峰 马保起 刘光勋 |
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| 作者单位： | 中国地震局地壳应力研究所,北京,100085 |
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| 摘 要： | 甘肃文县北部北东东向断裂带主要由松柏-何家坝-犁坪断裂东段、石鸡坝-观音坝断裂和石坊-临江断裂组成。运用地貌学原理和卫片判读，描述了该断裂带的新构造运动表现、运动方式。结果表明：（1）断裂带的新构造活动主要表现为左旋倾滑，水平活动规模较大；（2）石坊-临江断裂为两个明显的线性构造线，沿山脊横贯近东西向，线性构造线两侧冲沟及山脊被错，断裂呈现左旋走滑特点。在分析该断裂带地貌特征的基础上。初步探讨了地震与断层活动性的关系。
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| 关 键 词： | 斜列式断裂带 新构造活动 左旋倾滑 卫片 |
| 文章编号： | 1000-0666-(2006)02-0143-04 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005年7月20日 |
Characteristics of the Neotectonic Move-ment of the NEE-striking fault belt north of Wen County, Gansu |
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| LU Hai-feng,MA Bao-qi,LIU Guang-xun.Characteristics of the Neotectonic Move-ment of the NEE-striking fault belt north of Wen County, Gansu[J].Journal of Seismological Research,2006,29(2):143-146. |
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| Authors: | LU Hai-feng MA Bao-qi LIU Guang-xun |
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| Institution: | Institute of Crustal Dynamics, CEA , Beijing 100085, China |
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| Abstract: | The NEE-striking fault belt north of Wen County,Gansu,includes the east part of the Songbo-Hejiaping-Liping fault,Shjiba-Guanyinba fault and Shifang-Linjiang fault.We study their Neotectonic behaviors and motion patterns according to geomorphologic principle and satellite photograph explanation.The results show:(1) the Neotectonic activity of the belt is mainly left-lateral dip-slip,the scale of whose level activity is big;(2) the Shifang-Linjiang fault consists of two obvious linearity tectonics-lines parallel to the ridge along near-EW,the gullies of both sides of which and the ridge are offset,and the fault shows left-lateral strike-slip characteristic.On the basis of the geomorphic analysis of the belt,we primarily discuss the relation between earthquake and fault activity. |
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| Keywords: | diagonal fault belt Neotectonic activity left-lateral dip-slip satellite photograph |
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