【摘要】 研究了达尔布特断裂中段第四纪沉积物的分布特征、阶地变形、冲洪积扇变形、断层陡坎展布及探槽揭露等方面的内容。认为达尔布特断裂中段的活动以左旋走滑为主，晚更新世晚期以来垂直活动速率为0.011mm／a，水平活动速率为0．20～0．22mm／a；且至少有2次明显活动，全新世最后1次活动可能为古地震事件，时间距今约4000～4500年左右。研究结果表明，达尔布特断裂中段具有发生强震的构造条件。更多还原

【Abstract】 By studying the distribution characteristics of Quaternary sediment, terrace deformation, diluvial and alluvial fan deformation, fault scarp distribution and trench profiles, it is thought that the middle segment of Daerbute fault moves mainly in sinistral strike-slip way. Its vertical rate has been 0. 011 mm/a since Epileistocene, and horizontal rate 0. 20～0. 22 mm/a. It had two times of obvious activities, and the last one in Recent may be a palaeoearthquake, the time of which is about 4 000~5000 years from now. The studies show that Daerbute fault is of tectonic conditions of occurring strong earthquakes.更多还原