Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain,

Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South

of Datong Basin in Shanxi Province

Jiang Wali;Xie Xinsheng;Wang Huanzhen;Feng Xiying;Zhang Kangfu

【期刊名称】《中国地震研究（英文版）》 【年(卷),期】2003(017)003

【摘要】Our field investigation indicates that the northern piedmont fault of the Hengshan Mountain hasdislocated proluvial fan and terrace I of the gully mouth on the northern border of theHengshan Mountain. Stratigraphic age data indicates that the surface layer in the middle andrear part of the proluvial fan and on the terrace I of the gully mouth on the mountain borderconsists of sediments of about 5200 ～ 6800a B.P. The Hezhuang and Niucaoyu trenchesexcavated in the front of Hengshan Mountain revealed that 3 paleoseismic events have occurredalong the northern piedmont fault of Hengshan Mountain since the early Holocene. The 3paleoseismic events occurred in 2260 ± 190 ～ 4370 ± 150a BP, nearly 5628 ± 150a BP, and 8083± 250 ～ 8430 ± 720a BP, respectively, and their recurrence interval is 2313a, 2628a and 2471aon average. The coseismic vertical displacement produced by these events is 1.0 ～ 3.0m. Theelapsed time of the latest movement along

the

fault

has

exceeded

the

recurrence

interval

of

thesepaleoearthquakes. Thus, there exists the possibility of strong

earthquake occurrence along thefault from now onward, so the fault is in need of observation. 【总页数】14页(206-219)

【关键词】Trenching;Paleoearthquake;Holocene;Northern Hengshan piedmont fault

【作者】Jiang Wali;Xie Xinsheng;Wang Huanzhen;Feng Xiying;Zhang Kangfu

【作者单位】Institute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China;Institute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China;Institute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China;Institute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China;Institute of Crustal Dynamics, China Seismological Bureau, Beijing 100085, China 【正文语种】中文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_earthquake-research-china_thesis/0201252260838.html 【相关文献】

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