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  4. 中国科学院油气资源研究重点实验室
Crustal Deformation and Detachment in the Sulu Orogenic Belt: New Constraints From Onshore-Offshore Wide-Angle Seismic Data

文献类型：期刊论文

作者Liu, Lihua1,4; Hao, Tianyao1,3,4; Lu, Chuanchuan6; Wu, Zhiqiang2; Zheng, Yanpeng5; Wang, Fuyun7; Xu, Ya1,4; Kim, Kwang-hee8; Kim, Han-joon9
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2021-09-28
卷号48期号:18页码:10
ISSN号0094-8276
DOI10.1029/2021GL095248
英文摘要We deployed the first dense onshore-offshore seismic survey profile across the ultrahigh/ high-pressure metamorphic Sulu Orogenic Belt (SLOB). By applying multiple seismic and gravity modeling, we obtained the crustal P wave velocity and density model across the SLOB and extending into tectonic units on both sides, including the eastern Sino-Korean Block (SKB), and the lower Yangtze Block (YZB). A similar to 120-km-wide high-velocity and high-density upper crust in the southern SLOB reveals the distribution of ultrahigh/high-pressure metamorphism, which should be linking with the deep subduction, detachment, and exhumation of YZB midcrust. In the northern SLOB, the U-shaped velocity contours throughout the crust and the low-density midcrust reveals the downward bending of the crustal deformation due to the collision between SKB and YZB. The crustal deformation and detachment in the SLOB revealed by our results indicate that the orogenic spatial distribution should be wider than what we know before. Plain Language Summary The Sulu Orogenic Belt has the world's largest ultrahigh-pressure metamorphism and high-pressure metamorphism tectonic unit, becomes a natural laboratory for studying the dynamics of formation and evolution of the solid earth. The tectonic boundaries of the Sulu belt, especially the offshore boundaries, are still in controversy due to the lack of high-resolution deep structure studies in the offshore domains. Here we present the forward and inversion models from newly acquired dense onshore-offshore wide-angle seismic data, and discuss the different crustal structure features among the Sino-Korean Block, the Yangtze Block, and the Sulu belt. The crustal deformation and detachment addressed the distribution of the Sulu belt, which should be much wider than what we know before, and the underestimation of the extent of collision belts might be widespread in other orogenic or suture belts.
WOS关键词ULTRAHIGH-PRESSURE METAMORPHISM ; CONTINENTAL DEEP SUBDUCTION ; EXHUMATION DYNAMICS ; CHINA ; COLLISION ; ROCKS ; INVERSION ; BENEATH ; MARGIN ; NORTH
资助项目National Natural Science Foundation of China[42006070] ; National Natural Science Foundation of China[91858212] ; National Natural Science Foundation of China[4121005] ; KMA Research Development Program[KMI2018-02810]
WOS研究方向Geology
语种英语
WOS记录号WOS:000703685100043
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; KMA Research Development Program ; KMA Research Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; KMA Research Development Program ; KMA Research Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; KMA Research Development Program ; KMA Research Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; KMA Research Development Program ; KMA Research Development Program
源URL[http://ir.iggcas.ac.cn/handle/132A11/102698]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Liu, Lihua; Hao, Tianyao
作者单位1.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing, Peoples R China
2.Qingdao Inst Marine Geol, Qingdao, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
5.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China
6.Univ Cambridge, Dept Earth Sci, Bullard Labs, Cambridge, England
7.China Earthquake Adm, Geophys Prospecting Ctr, Zhengzhou, Peoples R China
8.Pusan Natl Univ, Dept Geol Sci, Busan, South Korea
9.Korea Inst Ocean Sci & Technol, Busan, South Korea
推荐引用方式
GB/T 7714		 Liu, Lihua,Hao, Tianyao,Lu, Chuanchuan,et al. Crustal Deformation and Detachment in the Sulu Orogenic Belt: New Constraints From Onshore-Offshore Wide-Angle Seismic Data[J]. GEOPHYSICAL RESEARCH LETTERS,2021,48(18):10.
APA Liu, Lihua.,Hao, Tianyao.,Lu, Chuanchuan.,Wu, Zhiqiang.,Zheng, Yanpeng.,...&Kim, Han-joon.(2021).Crustal Deformation and Detachment in the Sulu Orogenic Belt: New Constraints From Onshore-Offshore Wide-Angle Seismic Data.GEOPHYSICAL RESEARCH LETTERS,48(18),10.
MLA Liu, Lihua,et al."Crustal Deformation and Detachment in the Sulu Orogenic Belt: New Constraints From Onshore-Offshore Wide-Angle Seismic Data".GEOPHYSICAL RESEARCH LETTERS 48.18(2021):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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