气候变化领域集成服务门户(CCPortal): Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results

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DOI	10.1016/j.epsl.2019.115932
	Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results
	Ding W.; Sun Z.; Mohn G.; Nirrengarten M.; Tugend J.; Manatschal G.; Li J.
发表日期	2020
ISSN	0012821X
卷号	531
英文摘要	The South China Sea margins represent a critical natural laboratory to study the processes and parameters controlling the rift-to-drift transition. High quality seismic data previously suggested the occurrence of a relatively sharp transition between the continental and oceanic domains, a hypothesis recently validated by the results of the IODP Expedition 367&368 drilled in the northern South China Sea distal margin. Drilling results in this transition cored Mid-Ocean Ridge type basaltic basement (Site U1502), while its lateral equivalent showed continental affinities (Site U1499). Seismic data document the lateral evolution of this narrow transition zone (∼15 to 25 km wide) and tectono-magmatic context related to breakup. A short-period magmatic event occurred during the latest stage of continental rifting and intruded the edge of the thinned continental crust, triggering crustal breakup and onset of steady-state seafloor spreading. The architecture of the transitional domain documented in this work is in marked contrast with those interpreted as either magma-starved or magma-rich at breakup time, suggesting that the continental margin of the SCS is intermediate between the classical end-member magmatic archetypes. We propose that the magmatic event triggering continental breakup is related to decompression melting linked to the ascending asthenosphere. It is assumed that this event was rapid at geological time scale (<10 Ma) and was favored by a high mantle temperature. © 2019 The Author(s)
关键词	breakup IODP Expedition 367&368 rift-to-drift transition South China Sea tectono-magmatic processes
英文关键词	Drop breakup; Geophysical prospecting; Infill drilling; Seismic response; Decompression melting; Magmatic process; Multi-channel seismic datum; Natural laboratories; Northern South China Sea; rift-to-drift transition; South China sea; Thinned continental crust; Seismic waves
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202564
作者单位	Key Laboratory of Submarine Geosciences, State Oceanic Administration, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China; Shanghai Jiao Tong University, School of Oceanography, Shanghai, 20030, China; CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences (CAS), Guangzhou, 510301, China; Laboratoire Géosciences et Environnement Cergy (GEC), Maison Internationale de la Recherche, Université de Cergy-Pontoise, Paris, 95000, France; Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre Paris, ISTeP UMR 7193, Paris, F-75005, France; Total SA, R&D department, CSTJF, Pau, 64000, France; Institut de Physique du Globe de Strasbourg, Université de Strasbourg, Strasbourg-CNRSF-67084, France
推荐引用方式 GB/T 7714	Ding W.,Sun Z.,Mohn G.,et al. Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results[J],2020,531.
APA	Ding W..,Sun Z..,Mohn G..,Nirrengarten M..,Tugend J..,...&Li J..(2020).Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results.Earth and Planetary Science Letters,531.
MLA	Ding W.,et al."Lateral evolution of the rift-to-drift transition in the South China Sea: Evidence from multi-channel seismic data and IODP Expeditions 367&368 drilling results".Earth and Planetary Science Letters 531(2020).