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DOI	10.1016/j.tecto.2020.228338
	Thermo-rheological structure of the northern margin of the South China Sea: Structural and geodynamic implications
	Hu J.; Tian Y.; Long Z.; Hu D.; Huang Y.; Wang Y.; Hu S.
发表日期	2020
ISSN	00401951
卷号	777
英文摘要	Rheological properties of continental lithosphere are key controls on the behavior of continental deformation. Using thermal structure, constrained by surface heat flow data and measured thermal properties of rocks, the present study calculates different thermo-rheological structure scenarios for the ocean–continent transition (OCT) at the northern margin of the South China Sea, using two different models: a conventional model, taking into account frictional sliding and power-law creep, and a model that additionally includes a high-pressure brittle-fracture mechanism. Two compositions of the lower part of the lithosphere are considered: a soft case with felsic granulite lower crust and wet peridotite lithospheric mantle, and a hard case with mafic granulite lower crust and dry peridotite lithospheric mantle. The former scenario shows a major rheological change from a “jelly sandwich” to a “Christmas tree” type of rheology from north to south along the margin. This complex rheological structure explains lateral changes in earthquake distribution and geometries of extensional faults of the OCT at the northern margin of the South China Sea. Further, our analyses indicate that the initial lithospheric rheology profile probably has only one ductile layer in the lower part of upper crust. Such an initial lithospheric rheology model predicts focused extension to form asymmetric margins, which is the case for the SCS. © 2020 Elsevier B.V.
关键词	Crustal strength Ocean-continent transition Pearl River Mouth basin South China Sea Thermo-rheology
英文关键词	Elasticity; Faulting; Geodynamics; Lithology; Brittle fracture mechanism; Continental deformation; Continental lithosphere; Conventional modeling; Crustal strength; Ocean-continent transition; Pearl River Mouth basin; South China sea; Structural geology; continental lithosphere; creep; geodynamics; lower crust; numerical model; ocean-continent transition; power law; rheology; thermal structure; Pacific Ocean; South China Sea; Zhujiangkou Basin; Calluna vulgaris
语种	英语
来源期刊	Tectonophysics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207773
作者单位	State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing, 100029, China; Guangdong Provincial Key Laboratory of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat-sen University, Guangzhou, 510275, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China; Shenzhen Branch of China National Offshore Oil Corporation, Shenzhen, 518000, China
推荐引用方式 GB/T 7714	Hu J.,Tian Y.,Long Z.,et al. Thermo-rheological structure of the northern margin of the South China Sea: Structural and geodynamic implications[J],2020,777.
APA	Hu J..,Tian Y..,Long Z..,Hu D..,Huang Y..,...&Hu S..(2020).Thermo-rheological structure of the northern margin of the South China Sea: Structural and geodynamic implications.Tectonophysics,777.
MLA	Hu J.,et al."Thermo-rheological structure of the northern margin of the South China Sea: Structural and geodynamic implications".Tectonophysics 777(2020).