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Seismic history of a bedrock fault scarp using quantitative morphology together with multiple dating methods: A case study of the Luoyunshan piedmont fault, southwestern Shanxi Rift, China

文献类型：期刊论文

作者Zou, Junjie4,6; He, Honglin5,6; Yokoyama, Yusuke1,3; Shirahama, Yoshiki2; Sproson, Adam D.3; Wei, Zhanyu5,6; Shi, Feng5,6; Hao, Haijian5,6; Miyairi, Yosuke3; Lu, Lixing4
刊名TECTONOPHYSICS
出版日期2020-08-05
卷号788页码:18
ISSN号0040-1951
关键词Paleo-earthquake history Bedrock fault surface morphology Cosmogenic nuclide Cl-36 dating OSL dating Radiocarbon dating Luoyunshan piedmont fault
DOI10.1016/j.tecto.2020.228473
英文摘要The study of bedrock fault scarps is a useful approach to identify paleo-earthquakes and acquire the faulting history in bedrock areas where traditional trench techniques are not applicable. Here, we report a study on the Luoyunshan piedmont fault (LYSPF), southwestern Shanxi Rift, China. Although several studies have analyzed the LYSPF, its faulting behavior is still under debate. For example, the tectonic geomorphology fails to determine the frequency of past slips and the elapsed time. To address these problems, we investigated two bedrock fault surfaces, Luoyuncun (northern segment) and Weicun (southern segment) using quantitative morphology analyses together with multiple Quaternary dating techniques. Quantitative morphology analysis shows that both bedrock fault surfaces have the characteristics of vertical segmentation. This kind of segmentation indicates that the fault surfaces are exhumed intermittently, likely owing to periodic faulting earthquakes. Therefore, earthquake events can be identified as morphological segments, and the corresponding co-seismic displacement can be determined by the height of these segments. According to the results from the quantitative morphology and dating techniques, four seismic events, with a co-seismic vertical displacement of 0.9 m, 0.82 m, 1.64 to 2.38m and 2.30 to 2.54 m, on the northern segment occurred during the late Pleistocene, whereas, two seismic events, with a co-seismic vertical displacement of similar to 1.33m and 1 to 1.08m are identified on the southern segment occurred during the Holocene. Combined with the results of knickpoint series and trench techniques of the LYSPF, eight paleo-earthquake events were identified since 45 ka, with an average recurrence interval of 5.8 kyr. The more complete paleo-earthquake sequence also showed the possibility that the variation of the slip rate along the LYSPF depends on the segment, and that the displacement produced by the Linfen M 71/2 earthquake of 649 CE has been recorded at the WC fault surface.
WOS关键词IDENTIFYING PAST EARTHQUAKES ; COSMOGENIC CL-36 ; SURFACE-ROUGHNESS ; SLIP HISTORY ; CENTRAL APENNINES ; ORDOS BLOCK ; TOPOGRAPHY ; GREECE ; RATES ; DEFORMATION
资助项目National Science Foundation of China[41872213] ; National Science Foundation of China[U1939201] ; National Science Foundation of China[41702221] ; National Science Foundation of China[41602206]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者ELSEVIER
WOS记录号WOS:000540731100001
资助机构National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/96920]  
专题地质与地球物理研究所_其他部门
通讯作者He, Honglin
作者单位1.Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo 2778564, Japan
2.Natl Inst Adv Ind Sci & Technol, Res Inst Earthquake & Volcano Geol, Tsukuba, Ibaraki 3058567, Japan
3.Univ Tokyo, Atmosphere & Ocean Res Inst, Tokyo 2778564, Japan
4.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
5.Shanxi Taiyuan Continental Rift Dynam Natl Observ, Taiyuan 030025, Peoples R China
6.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zou, Junjie,He, Honglin,Yokoyama, Yusuke,et al. Seismic history of a bedrock fault scarp using quantitative morphology together with multiple dating methods: A case study of the Luoyunshan piedmont fault, southwestern Shanxi Rift, China[J]. TECTONOPHYSICS,2020,788:18.
APA Zou, Junjie.,He, Honglin.,Yokoyama, Yusuke.,Shirahama, Yoshiki.,Sproson, Adam D..,...&Zhou, Chao.(2020).Seismic history of a bedrock fault scarp using quantitative morphology together with multiple dating methods: A case study of the Luoyunshan piedmont fault, southwestern Shanxi Rift, China.TECTONOPHYSICS,788,18.
MLA Zou, Junjie,et al."Seismic history of a bedrock fault scarp using quantitative morphology together with multiple dating methods: A case study of the Luoyunshan piedmont fault, southwestern Shanxi Rift, China".TECTONOPHYSICS 788(2020):18.

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来源：地质与地球物理研究所

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