首页|期刊导航|中国地震研究(英文版)|Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South of Datong Basin in Shanxi Province
中国地震研究(英文版)2003，Vol.17Issue(3)：206-219,14.
Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South of Datong Basin in Shanxi Province
Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South of Datong Basin in Shanxi Province
摘要
Abstract
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.关键词
Trenching/Paleoearthquake/Holocene/Northern Hengshan piedmont faultKey words
Trenching/Paleoearthquake/Holocene/Northern Hengshan piedmont fault引用本文复制引用
Jiang Wali,Xie Xinsheng,Wang Huanzhen,Feng Xiying,Zhang Kangfu..Holocene Paleoseismic Activity Along the Northern Piedmont Fault of the Hengshan Mountain, South of Datong Basin in Shanxi Province[J].中国地震研究(英文版),2003,17(3):206-219,14.基金项目
The research project is one of the key research projects supported by Joint Earthquake Science Foundation ( 201007 ). Contribution No. 2002A0004, Institute of Crustal Dynamics, China Seismological Bureau. （ 201007 ）
