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Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea
Chen, Duanxin1,2; Wang, Xiujuan1,2; Voelker, David3; Wu, Shiguo4; Wang, Lei5; Li, Wei6; Li, Qingping7; Zhu, Zhenyu7; Li, Cuilin1,2; Qin, Zhiliang8; Sun, Qiliang9
2016-11-01
Source PublicationMARINE AND PETROLEUM GEOLOGY
Volume77Pages:1125-1139
AbstractMass transport deposits and geological features related to fluid flow such as gas chimneys, mud diapirs and volcanos, pockmarks and gas hydrates are pervasive on the canyon dominated northern slope of the Pearl River Mouth basin of the South China Sea. These deposits and structures are linked to serious geohazards and are considered risk factors for seabed installations. Based on high resolution three dimensional seismic surveys, seismic characteristics, distributions and origins of these features are analyzed. A distribution map is presented and geometrical parameters and spatial distribution patterns are summarized. Results show that various groups of the mapped features are closely tied to local or regional tectonism and sedimentary processes. Mass transport complexes are classified as slides near the shelf break, initially deformed slumps on the flanks of canyons and highly deformed slumps on the lower slope downslope of the mouth of canyons. We propose them to be preconditioned by pore pressure changes related to sea level fluctuations, steep topography, and fluid and fault activities. Gas chimneys are mainly located in the vicinity of gas reservoirs, while bottom-simulating reflectors are observed within the gas chimney regions, suggesting gas chimneys serve as conduits for thermogenic gas. Mud diapirs/volcanos and pockmarks are observed in small numbers and the formation of pockmarks is related to underlying gas chimneys and faults. This study aims at reducing risks for deep-water engineering on the northern slope of South China Sea. (C) 2016 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordDeep-water Hazard-related Features Mass Transport Complexes Fluid Flow Gas Hydrate Gas Chimney Mud Volcano Pockmark South China Sea
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.marpetgeo.2016.08.012
Indexed BySCI
Language英语
WOS KeywordPEARL RIVER MOUTH ; SUBMARINE LANDSLIDE COMPLEX ; GAS HYDRATE OCCURRENCE ; FOCUSED FLUID-FLOW ; CONTINENTAL-SLOPE ; STOREGGA SLIDE ; MEDITERRANEAN SEA ; OFFSHORE NORWAY ; CANYON SYSTEM ; SHENHU AREA
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000384861400071
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/1653
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.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.Univ Bremen, Marum Ctr Marine Environm Sci, D-28359 Bremen, Germany
4.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
5.Minist Land & Resources, Qingdao Inst Marine Geol, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
6.Univ Kiel, Inst Geosci, D-24118 Kiel, Germany
7.China Natl Offshore Oil Corp, Beijing Res Ctr, Beijing 100027, Peoples R China
8.MOT, Tianjin Res Inst Water Transport Engn, Tianjin 300456, Peoples R China
9.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Peoples R China
Recommended Citation
GB/T 7714
Chen, Duanxin,Wang, Xiujuan,Voelker, David,et al. Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2016,77:1125-1139.
APA Chen, Duanxin.,Wang, Xiujuan.,Voelker, David.,Wu, Shiguo.,Wang, Lei.,...&Sun, Qiliang.(2016).Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea.MARINE AND PETROLEUM GEOLOGY,77,1125-1139.
MLA Chen, Duanxin,et al."Three dimensional seismic studies of deep-water hazard-related features on the northern slope of South China Sea".MARINE AND PETROLEUM GEOLOGY 77(2016):1125-1139.
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