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Mass transport deposits and processes in the north slope of the Xisha Trough, northern South China Sea
Qin Zhiliang1; Wu Shiguo2; Wang Dawei2; Li Wei2; Gong Shaojun3; Mi Lijun4; Spence, George5
2015-09-01
Source PublicationACTA OCEANOLOGICA SINICA
Volume34Issue:9Pages:117-125
AbstractTriple mass-transport deposits (MTDs) with areas of 625, 494 and 902 km2, respectively, have been identified on the north slope of the Xisha Trough, northern South China Sea margin. Based on high-resolution seismic reflection data and multi-beam bathymetric data, the Quaternary MTDs are characterized by typical geometric shapes and internal structures. Results of slope analysis showed that they are developed in a steep slope ranging from 5A degrees to 35A degrees. The head wall scarps of the MTDs arrived to 50 km in length (from headwall to termination). Their inner structures include well developed basal shear surface, growth faults, stepping lateral scarps, erosion grooves, and frontal thrust deformation. From seismic images, the central deepwater channel system of the Xisha Trough has been filled by interbedded channel-levee deposits and thick MTDs. Therefore, we inferred that the MTDs in the deepwater channel system could be dominated by far-travelled slope failure deposits even though there are local collapses of the trough walls. And then, we drew the two-dimensional process model and threedimensional structure model diagram of the MTDs. Combined with the regional geological setting and previous studies, we discussed the trigger mechanisms of the triple MTDs.
SubtypeArticle
KeywordSouth China Sea Mass Transport Deposits Submarine Slides Gravity Flow Deepwater Channel System
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s13131-015-0608-9
URL查看原文
Indexed BySCI
Language英语
WOS Keyword3D SEISMIC DATA ; SUBMARINE LANDSLIDES ; TURBIDITY CURRENTS ; QIONGDONGNAN BASIN ; CONTINENTAL-SLOPE ; MARGIN ; COMPLEXES ; EVOLUTION ; EXAMPLES ; SYSTEM
WOS SubjectOceanography
WOS IDWOS:000360819600014
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.idsse.ac.cn/handle/183446/1205
Collection深海科学研究部_深海地球物理与资源研究室
Affiliation1.Minist Transport, Tianjin Res Inst Water Transport Engn, Tianjin 300456, Peoples R China
2.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Lab Marine Geophys & Deep Sea Georesource, Sanya 572000, Peoples R China
3.Tianjin Explorat Ctr Marine Geol, Tianjin 300170, Peoples R China
4.China Natl Offshore Oil Corp, Dept Explorat, Beijing 100010, Peoples R China
5.Univ Victoria, Sch Earth & Ocean Sci, Victoria, BC V8P 5C2, Canada
Recommended Citation
GB/T 7714
Qin Zhiliang,Wu Shiguo,Wang Dawei,et al. Mass transport deposits and processes in the north slope of the Xisha Trough, northern South China Sea[J]. ACTA OCEANOLOGICA SINICA,2015,34(9):117-125.
APA Qin Zhiliang.,Wu Shiguo.,Wang Dawei.,Li Wei.,Gong Shaojun.,...&Spence, George.(2015).Mass transport deposits and processes in the north slope of the Xisha Trough, northern South China Sea.ACTA OCEANOLOGICA SINICA,34(9),117-125.
MLA Qin Zhiliang,et al."Mass transport deposits and processes in the north slope of the Xisha Trough, northern South China Sea".ACTA OCEANOLOGICA SINICA 34.9(2015):117-125.
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