南方科技大学知识苑(SUSTech KC): Postseafloor Spreading Volcanism in the Central East South China Sea and Its Formation Through an Extremely Thin Oceanic Crust

题名	Postseafloor Spreading Volcanism in the Central East South China Sea and Its Formation Through an Extremely Thin Oceanic Crust
作者	Zhao, Minghui 1; He, Enyuan 1; Sibuet, Jean-Claude 2; Sun, Longtao 1; Qiu, Xuelin 1; Tan, Pingchuan 3; Wang, Jian4
通讯作者	Zhao, Minghui; He, Enyuan
发表日期	2018-03
DOI	10.1002/2017GC007034
发表期刊	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 影响因子和分区
ISSN	1525-2027
卷号	19 期号:3页码:621-641
摘要	P wave velocity models were obtained by forward and inverse modeling from 38 ocean bottom seismometers deployed in the central East subbasin of the South China Sea (SCS). Four types of crust have been defined: (a) thin oceanic crust (<5 km), (b) typical oceanic crust (5-6 km), (c) thick oceanic crust hosting postspreading volcanoes (>6 km) with significant intrusive roots, and (d) thick oceanic crust with enhanced spreading features (>6 km) but without significant roots. Within the central East subbasin, the thin oceanic crust, only identified inside an 80 km wide zone, is located within an overall 150 km wide domain characterized by N055 degrees seafloor spreading trends. The postspreading volcanoes were formed during a N-S tensional episode around 6-10 Ma, several millions of years after seafloor spreading ceased in the SCS. Seafloor spreading (N055 degrees and N145 degrees) and postspreading (N000 degrees and N090 degrees) features are observed in the morphology of some of these volcanoes. The rupture of the brittle thin oceanic crust was focused where the crust was the weakest, i.e., at the intersection of the extinct spreading ridge with former fracture zones. From geological and geophysical arguments, we suggest that the postspreading volcanism might have been influenced by the Hainan plume activity through a buoyancy-driven partial melting mechanism.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	其他
资助项目	Chinese National Natural Science Foundation[91428204] ; Chinese National Natural Science Foundation[91028002] ; Chinese National Natural Science Foundation[41730532] ; Chinese National Natural Science Foundation[41674092] ; Chinese National Natural Science Foundation[41576070]
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000433289500004
出版者	AMER GEOPHYSICAL UNION
EI入藏号	20181104894715
EI主题词	Brittle fracture ; Inverse problems ; Seismic waves ; Seismology ; Wave propagation
EI分类号	Seismology:484 ; Earthquake Measurements and Analysis:484.1
ESI学科分类	GEOSCIENCES
来源库	Web of Science
引用统计	被引频次[WOS]：66
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/27987
专题	工学院_海洋科学与工程系
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China 2.IFREMER, Ctr Brest, 44 Rue Cloitre, F-29280 Plouzane, France 3.Univ Oslo, Ctr Earth Evolut & Dynam, Oslo, Norway 4.South Univ Sci & Technol China, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Minghui,He, Enyuan,Sibuet, Jean-Claude,et al. Postseafloor Spreading Volcanism in the Central East South China Sea and Its Formation Through an Extremely Thin Oceanic Crust[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2018,19(3):621-641.
APA	Zhao, Minghui.,He, Enyuan.,Sibuet, Jean-Claude.,Sun, Longtao.,Qiu, Xuelin.,...&Wang, Jian.(2018).Postseafloor Spreading Volcanism in the Central East South China Sea and Its Formation Through an Extremely Thin Oceanic Crust.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,19(3),621-641.
MLA	Zhao, Minghui,et al."Postseafloor Spreading Volcanism in the Central East South China Sea and Its Formation Through an Extremely Thin Oceanic Crust".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 19.3(2018):621-641.