【摘要】 在本文中，作者在近几年进行的大比例尺活断层地质填图工作的基础上，介绍了西秦岭北缘断裂带晚第四纪以来活动的基本待征，研究了该断裂带的空间展布情况、几何学和运动学特征、断层活动速率、古地震与地震重复周期等。结果表明，该断裂带自第四纪以来由压性逐渐演变为左旋扭动，其水平滑动速率为２．１－２．８ｍｍ／年，垂直滑动速率为０．４－０．７ｍｍ／年，地震复发周期约为５０００年。更多还原

【Abstract】 In thispaper,basedonthe fillingactivein geologicmap withlarge scaleinrecentyears,the authors presenthe basic activity characteristics ofthe faultzone at northern edge ofwestern Qinling Mt.since lateQuaternary period,and study the spatial distribution,geometryand kinematics characteristics,slip rate of fault,paleoearthquake and seismic recurrence period. The results show that the active way of the fault zone changes from compression to left- later-al slip since Quaternary period,with a horizontal slip rate 2.1-2.8mm/ year and a vertical sliprate of 0.4- 0.7mm/year. The recurrence period of earthquake is about 5000 years in the fault zone.更多还原