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Differential strain transfer, Longmen Shan thrust belt, eastern Tibetan Plateau margin: Implications for seismic hazards
Shao, Chongjian1,2; Li, Yong1; Yan, Zhaokun1; Liu, Shao3; Zhou, Rongjun3; Li, Jingbo4; Dong, Shunli1; Yan, Liang1; Deng, Tao1; Nie, Zhou5
2019
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
ISSN1367-9120
Volume169Pages:284-297
Corresponding AuthorLi, Yong(liy@cdut.edu.cn)
AbstractSoutheastward strain transfer in the middle-southern Longmen Shan (LMS) thrust belt not only can promote the development of fault-related folds and earthquakes in the piedmont, but also affect the seismogenic capacity of the middle-southern LMS thrust belt. However, the detailed transfer process remains elusive. In this work, we combine structural profile re-analysis, sandbox modeling and seismic statistics to illustrate the strain transfer process. Our main results indicate that: (1) the thickness of the shallow detachment (e.g. Middle-Lower Triassic gypsum-salt strata) is probably the main factor for differences in southeastward strain transfer within the domain between the middle-southern LMS thrust belt and Weiyuan-Moxi anticline. This is also supported by our sandbox model; (2) the seismogenic capacity in the southern LMS thrust belt is probably proportional to the corresponding shortening of the Range Front Blind Thrust (REST). Thus, seismogenic capacity in the seismic gap zone is weaker than those of other segments of the southern LMS thrust belt, which is probably < Ms 7.0. (3) The weak seismogenic capacity (< Ms 7.0) and formation of the seismic gap is probably attributed to weak petrophysical properties and enhanced southeastward strain transfer. It is worth noting that the 1970 Dayi Ms 6.2 earthquake probably released most energy of the seismic gap. Further, this work also sheds light on the evaluation of seismic hazard in the LMS and other orogenic belts.
KeywordLongmen Shan Southeastward strain transfer Shallow detachment Seismic hazard Seismic gap
DOI10.1016/j.jseaes.2018.09.005
WOS Keyword2013 LUSHAN EARTHQUAKE ; W 7.9 WENCHUAN ; SICHUAN BASIN ; ANALOG MODELS ; SEISMOGENIC STRUCTURE ; STRUCTURAL GEOMETRY ; CRUSTAL DEFORMATION ; M(S)7.0 EARTHQUAKE ; WESTERN SICHUAN ; FORELAND BASIN
Indexed BySCI
Language英语
Funding ProjectKey national research and development projects in the 13th five-year plan[2017YFC1501000] ; Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation[PLC201604] ; National Natural Science Foundation of China[41525010] ; National Natural Science Foundation of China[41741003] ; National Natural Science Foundation of China[41502116] ; Sichuan science and technology department project[2018124] ; Sichuan science and technology department project[2017JY0140]
Funding OrganizationKey national research and development projects in the 13th five-year plan ; Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; National Natural Science Foundation of China ; Sichuan science and technology department project
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000453619400020
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51392
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Yong
Affiliation1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.Seismol Bur Sichuan Prov, Chengdu 610041, Sichuan, Peoples R China
4.China Univ Geosci, Sch Earth Sci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Hubei, Peoples R China
5.Sichuan Changning Nat Gas Dev Co Ltd, Chengdu 610000, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Shao, Chongjian,Li, Yong,Yan, Zhaokun,et al. Differential strain transfer, Longmen Shan thrust belt, eastern Tibetan Plateau margin: Implications for seismic hazards[J]. JOURNAL OF ASIAN EARTH SCIENCES,2019,169:284-297.
APA Shao, Chongjian.,Li, Yong.,Yan, Zhaokun.,Liu, Shao.,Zhou, Rongjun.,...&Nie, Zhou.(2019).Differential strain transfer, Longmen Shan thrust belt, eastern Tibetan Plateau margin: Implications for seismic hazards.JOURNAL OF ASIAN EARTH SCIENCES,169,284-297.
MLA Shao, Chongjian,et al."Differential strain transfer, Longmen Shan thrust belt, eastern Tibetan Plateau margin: Implications for seismic hazards".JOURNAL OF ASIAN EARTH SCIENCES 169(2019):284-297.
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