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Recurrent slope failure enhancing source rock burial depth and seal unit competence in the Pearl River Mouth Basin, offshore South China Sea
Zhao, Fang1,5; Alves, Tiago M.2; Li, Wei3; Wu, Shiguo4
2015-03-07
Source PublicationTECTONOPHYSICS
Volume643Issue:2015Pages:1-7
AbstractHigh-quality 3-D seismic data are used to assess the significance of mass-transport deposits (MTDs) to the evolution of the Pearl River Mouth Basin (South China Sea). Basal shear surfaces and lateral margins of seven recurrent MTDs are mapped to reveal a general NE-SW transport direction throughout the Late Miocene-Quaternary. A key result of our analysis is the perceived relationship between the recurrence of slope instability in the study area and the Dongsha Tectonic Event. Using borehole data to constrain the ages of interpreted MTDs, we show that tectonic uplift in the northern South China Sea led to slope oversteepening in the Late Miocene (between 10.5 Ma and 5.5 Ma), preconditioning it to fail recurrently for more than 10 Ma. Interpreted MTDs are shown to enhance burial depths of source and reservoir units, and improve seal competence in lower-slope areas. Conversely, upper slope regions record important erosion and reduced sealing capacity in Late Cenozoic strata. As a result, we postulate that the thickness variations imposed by MTDs on Late Miocene-Quaternary strata have important implications to petroleum plays in the South China Sea. (C) 2014 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordContinental Margins South China Sea Mass-transport Deposits Faults Burial Depth Petroleum Plays
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.tecto.2014.12.006
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMASS-TRANSPORT COMPLEXES ; POSTRIFT UPLIFT ; MARGIN ; GEOCHEMISTRY ; ORIGIN ; AREA
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000350836000001
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/464
Collection深海科学研究部_深海地球物理与资源研究室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.Cardiff Univ, Sch Earth & Ocean Sci, Seism Lab 3D, Cardiff CF10 3AT, S Glam, Wales
3.Univ Bremen, Ctr Marine Environm Sci, MARUM, D-28359 Bremen, Germany
4.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Fang,Alves, Tiago M.,Li, Wei,et al. Recurrent slope failure enhancing source rock burial depth and seal unit competence in the Pearl River Mouth Basin, offshore South China Sea[J]. TECTONOPHYSICS,2015,643(2015):1-7.
APA Zhao, Fang,Alves, Tiago M.,Li, Wei,&Wu, Shiguo.(2015).Recurrent slope failure enhancing source rock burial depth and seal unit competence in the Pearl River Mouth Basin, offshore South China Sea.TECTONOPHYSICS,643(2015),1-7.
MLA Zhao, Fang,et al."Recurrent slope failure enhancing source rock burial depth and seal unit competence in the Pearl River Mouth Basin, offshore South China Sea".TECTONOPHYSICS 643.2015(2015):1-7.
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