j.hndz.2019.03.009]
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渭南塬前断裂晚第四纪古地震研究()

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华南地震[ISSN:1006-6977/CN:61-1281/TN]

Title:: Late Quaternary Paleoearthquake Research of Weinan Plateau Front Fault

Author(s):: LI Gaoyang; LI Chenxia; LI Xiaoni; MA Ji; Shaanxi Earthquake Agency，Xi’an 710068，China

摘要:: 渭南塬前断裂是渭南市南侧一条重要的全新世活动断裂，也是1556年华县81/4级大地震的发震断裂之一。通过对渭南市南侧的蒋家村剖面的详细研究，揭示出了两次古地震事件，发生时间分别在41.58±1.72 ka与14.43±0.59 ka之间，0.73±0.03 ka之后，黑垆土被错断0.3 m，通过钻孔剖面获得T2阶地砾石层被断错了17.4 m，利用T2阶地砾石层的最大年龄为60.36±3.16 ka，可获得渭南塬前断裂晚第四纪以来平均滑动速率为0.29 mm/a。

Abstract:: Weinan plateau front fault is an important activity fault on the south side of Weinan City，and it is also one of the seismogenic fault of the Huaxian earthquake in 1556. Through a detailed study of the profile of Jiangjiacun on the south side of Weinan City，it was revealed that two ancient earthquakes occurred between41.58±1.72 ka ka and 14.43±0.59 ka，respectively，after 0.73±0.03 ka，The black clay was staggered by 0.3 M，.The T2 gravel layer was broken 17.4 M by drilling profiles. The maximum age of the T2 gravel layer was 60.36 ± 3.16 ka，and the average sliding rate since the late Quaternary period was 0.29 mm/a.

[1]李光涛,程理,吴昊,等.雅鲁藏布江下游沿岸更新世末—全新世软沉积物变形构造特征、成因及其地质意义[J].华南地震,2019,39(增刊):109.[doi:10.13512/j.hndz.2019.S1.018]
　LI Guangtao,CHENG Li,WU Hao,et al.Soft Sediment Deformation Along the Lower Reaches of the Brahmaputra River and Its Geological Significance[J].,2019,39(03):109.[doi:10.13512/j.hndz.2019.S1.018]
[2]王度,陈立春,李彦宝,等.西藏中部格仁错断裂中段曲巴晚第四纪活动特征与古地震事件[J].华南地震,2024,(04):1.[doi:10.13512/j.hndz.2024.04.01]
　WANG Duo,CHEN Lichun,LI Yanbao,et al.Late Quaternary Activities and Paleoearthquakes at Quba Along Middle Segment of Gyaring Co Fault in Central Tibet[J].,2024,(03):1.[doi:10.13512/j.hndz.2024.04.01]

更新日期/Last Update: 2019-09-16