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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。
The distribution characteristics of Quaternary sediments, terrace deformation, alluvial fan deformation, fault scarp distribution and trench uncovered in the middle section of Dalbott fault are studied. It is considered that the activity in the middle part of Dalbott fault is dominated by left-lateral strike-slip, the vertical activity rate is 0.011mm / a since the Late Pleistocene and the horizontal activity rate is 0.20 ~ 0.22mm / a; and there are at least 2 significant activities In the Holocene, the last event may be an event of paleoseismicity with a time span of about 4,000 to 4,500 years. The results show that the mid-Dalbott fault has tectonic conditions for strong earthquakes.