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Oceanic mantle gravimetric response to the seafloor spreading of the Southwest Sub-basin, South China Sea
Lu, Chuanchuan; Hao, Tianyao; Yao, Yongjian; Xing, Jian; Qiu, Xuelin; Lu, CC (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China.
2016
发表期刊GEOLOGICAL JOURNAL
卷号51页码:535-547
摘要The residual mantle gravity anomaly (RMA) is a straightforward response of the deep mantle structure of the lithosphere. We acquired RMA from newly updated free-air gravity anomaly by incorporating abundant geophysical evidences, such as the International Ocean Drilling Program expedition 349, the interpretation of 10 seismic profiles and the bathymetric data in the Southwest Sub-basin (SWSB) of the South China Sea. By inverting the crustal thickness by the application of the isostatic flexure analysis, comparing with ocean bottom seismic tomography result, then determining a detail crustal thickness of the study region, we calculated the RMA of the oceanic basin in the SWSB. The main features of the RMA and their relation to the palaeo-spreading pattern are discussed, and the implications of the asymmetric lithospheric deformation due to variations in melt extraction are proposed. In the light of the asymmetric RMA at the north and south sides of the fossil spreading centre in the SWSB, we preferred asymmetric melt retention depth and extraction rate changes during the oceanic lithosphere creation of the South China Sea. Copyright (c) 2016 John Wiley & Sons, Ltd.
部门归属[Lu, Chuanchuan; Hao, Tianyao; Xing, Jian] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China; [Yao, Yongjian] China Geol Survey, Guangzhou Marine Geol Survey, Guangzhou 510075, Guangdong, Peoples R China; [Qiu, Xuelin] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China ; 边缘海地质
关键词South China Sea Residual Mantle Gravity Anomaly Oceanic Mantle Basement Structure Flexural Isostasy Analysis
学科领域Geology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15331
专题中科院边缘海地质重点实验室
通讯作者Lu, CC (reprint author), Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China.
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GB/T 7714
Lu, Chuanchuan,Hao, Tianyao,Yao, Yongjian,et al. Oceanic mantle gravimetric response to the seafloor spreading of the Southwest Sub-basin, South China Sea[J]. GEOLOGICAL JOURNAL,2016,51:535-547.
APA Lu, Chuanchuan,Hao, Tianyao,Yao, Yongjian,Xing, Jian,Qiu, Xuelin,&Lu, CC .(2016).Oceanic mantle gravimetric response to the seafloor spreading of the Southwest Sub-basin, South China Sea.GEOLOGICAL JOURNAL,51,535-547.
MLA Lu, Chuanchuan,et al."Oceanic mantle gravimetric response to the seafloor spreading of the Southwest Sub-basin, South China Sea".GEOLOGICAL JOURNAL 51(2016):535-547.
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