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Three dimensional seismic anatomy of multi-stage mass transport deposits in the Pearl River Mouth Basin, northern South China Sea: Their ages and kinematics
Sun, Qiliang1,2,3; Xie, Xinong1,3; Piper, David J. W.4; Wu, Jing5; Wu, Shiguo6; Sun, Qiliang(China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Hubei, Peoples R China)
2017-11-01
Source PublicationMARINE GEOLOGY
Volume393Pages:93-108
Contribution Rank第1完成单位 ; 第2完成单位 ; 第3完成单位 ; 第4完成单位 ; 第5完成单位 ; 第6完成单位
AbstractThree superimposed Quaternary mass transport deposits (MTD1, MTD2 and MTD3) in the Pearl River Mouth Basin of the northern South China Sea are identified using high-resolution three dimensional seismic data. This study dissects the three stacked MTDs in detail and interprets their distribution based on antecedent bathymetry and their kinematics from identified structures and sedimentological models. Each MTD is characterized by linear grooves at its base, by chaotic seismic reflections and complex internal structures, such as remnant, rafted and faulted blocks. The linear grooves and internal structures of MTDs indicate that the sediments mainly flowed from the NW to SE in the study area. Moreover, internal structures suggest that MTD2 is a spread and MTD3 is a rotational slump, both terminating upslope at a regional linear escarpment. MTD1 is interpreted as the distal part of a larger MTD. The ages of MTD1, MTD2 and MTD3, based on seismic correlation with ODP Site 1146, are 0.54 Ma, 0.79 Ma and 1.59 Ma respectively. High-amplitude seismic reflections observed below the MTDs are interpreted as coarse-grained turbidites. Headscarp locations are controlled by both the underlying structures (such as basement highs and related faults) and the distribution of weak layers that are probably gas-bearing thin turbidite silt beds. This study provides precise ages of stacked MTDs in the northern South China Sea for the first time and at least locally provides clear evidence for the flow directions and controlling factors of the stacked MTDs. Similar lower slope rise MTDs, of local origin, may be widespread elsewhere, but would be difficult to distinguish without 3-D seismic data.
SubtypeArticle
KeywordMass Transport Deposits Kinematics Chronology Grooves Blocks Basement Highs Northern South China Sea
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.margeo.2017.05.005
URL查看原文
Indexed BySCI
Language英语
WOS KeywordWESTERN MEDITERRANEAN SEA ; SUBMARINE LANDSLIDES ; TRIGGERING MECHANISMS ; CONTINENTAL-MARGIN ; SEDIMENT FAILURES ; FLUID MIGRATION ; STOREGGA SLIDE ; SLOPE ; COMPLEXES ; EXAMPLES
WOS SubjectGeosciences, Multidisciplinary ; Oceanography
WOS IDWOS:000418222700007
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/5269
Collection深海科学研究部_深海地球物理与资源研究室
Corresponding AuthorSun, Qiliang; Sun, Qiliang(China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Hubei, Peoples R China)
Affiliation1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Hubei, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China
3.China Univ Geosci, Coll Marine Sci & Technol, Wuhan 430074, Hubei, Peoples R China
4.Nat Resources Canada, Geol Survey Canada Atlantic, Bedford Inst Oceanog, POB 1006, Dartmouth, NS B2Y 4A2, Canada
5.CNOOC Ltd, Shenzhen Branch, Guangzhou 510240, Guangdong, Peoples R China
6.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
Recommended Citation
GB/T 7714
Sun, Qiliang,Xie, Xinong,Piper, David J. W.,et al. Three dimensional seismic anatomy of multi-stage mass transport deposits in the Pearl River Mouth Basin, northern South China Sea: Their ages and kinematics[J]. MARINE GEOLOGY,2017,393:93-108.
APA Sun, Qiliang,Xie, Xinong,Piper, David J. W.,Wu, Jing,Wu, Shiguo,&Sun, Qiliang.(2017).Three dimensional seismic anatomy of multi-stage mass transport deposits in the Pearl River Mouth Basin, northern South China Sea: Their ages and kinematics.MARINE GEOLOGY,393,93-108.
MLA Sun, Qiliang,et al."Three dimensional seismic anatomy of multi-stage mass transport deposits in the Pearl River Mouth Basin, northern South China Sea: Their ages and kinematics".MARINE GEOLOGY 393(2017):93-108.
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