[1]李高阳,李陈侠,李晓妮,等.渭南塬前断裂晚第四纪古地震研究[J].华南地震,2019,39(03):65-70.[doi:10.13512/j.hndz.2019.03.009]
　LI Gaoyang,LI Chenxia,LI Xiaoni,et al.Late Quaternary Paleoearthquake Research of Weinan Plateau Front Fault[J].,2019,39(03):65-70.[doi:10.13512/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]

卷:
39
期数:
2019年03期
页码:
65-70
栏目:
华南地震
出版日期:
2019-09-02

文章信息/Info

Title:
Late Quaternary Paleoearthquake Research of Weinan Plateau Front Fault
作者:
李高阳; 李陈侠; 李晓妮; 马　冀
陕西省地震局，西安 710068
Author(s):
LI Gaoyang; LI Chenxia; LI Xiaoni; MA Ji
Shaanxi Earthquake Agency，Xi’an 710068，China
关键词:
南塬前断裂; 古地震; 滑动速率; 活动性
Keywords:
Weinan plateau front fault; Paleoseismic; Lip rate; Activity
DOI:
10.13512/j.hndz.2019.03.009
文献标志码:
A
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.

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更新日期/Last Update: 2019-09-16