The morphologies and genesis of mega-pockmarks near the Xisha Uplift, South China Sea

doi:10.1016/j.marpetgeo.2011.03.003

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	The morphologies and genesis of mega-pockmarks near the Xisha Uplift, South China Sea
	Sun, Qiliang 1,2; Wu, Shiguo 1; Hovland, Martin 3,4; Luo, Peng 5; Lu, Yintao6 ; Qu, Tailai 7; Sun, QL (reprint author), Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China, Peoples R China
刊名	MARINE AND PETROLEUM GEOLOGY
	2011-06-01
卷号	28 期号:6 页码:1146-1156
关键词	Mega-pockmarks Bottom Currents Fluid Flow Crescentic Pockmarks South China Sea
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2011.03.003
文献子类	Article
英文摘要	Pockmarks are normally regarded to be manifestations of fluids escape through the seabed. Kilometer-wide depressions, here called mega-pockmarks occur as widespread features near the Xisha Uplift, northern South China Sea. Most of the pockmarks observed in this area are multi-kilometers and much larger than normal-pockmarks reported worldwide. The maximum diameter observed is 3210 m and the maximum depth observed is 165.2 m based on multibeam data and 2D seismic data. The pockmarks are circular, elliptical and crescentic in plan view. Seismic profiles show that the genesis of pockmarks is related to fluid (gas and/or pore water) escape. According to the fluids pathways, the pockmarks fall into four types: (1) gas chimney-related; (2) depositional boundary-related; (3) gas chimney and inclined structure (fault)-related; (4) inclined structure-related. Bottom currents are strong and complex in the study area. The multibeam data and seismic profiles indicate that they may play an important role on extension, maintenance and shaping of pockmarks. The research of the study area is in its initial stage, and the identification of these features as indicators of fluid flow is probably useful for hydrocarbon exploration. (C) 2011 Elsevier Ltd. All rights reserved.; Pockmarks are normally regarded to be manifestations of fluids escape through the seabed. Kilometer-wide depressions, here called mega-pockmarks occur as widespread features near the Xisha Uplift, northern South China Sea. Most of the pockmarks observed in this area are multi-kilometers and much larger than normal-pockmarks reported worldwide. The maximum diameter observed is 3210 m and the maximum depth observed is 165.2 m based on multibeam data and 2D seismic data. The pockmarks are circular, elliptical and crescentic in plan view. Seismic profiles show that the genesis of pockmarks is related to fluid (gas and/or pore water) escape. According to the fluids pathways, the pockmarks fall into four types: (1) gas chimney-related; (2) depositional boundary-related; (3) gas chimney and inclined structure (fault)-related; (4) inclined structure-related. Bottom currents are strong and complex in the study area. The multibeam data and seismic profiles indicate that they may play an important role on extension, maintenance and shaping of pockmarks. The research of the study area is in its initial stage, and the identification of these features as indicators of fluid flow is probably useful for hydrocarbon exploration. (C) 2011 Elsevier Ltd. All rights reserved.
学科主题	Geology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000290199300002
公开日期	2012-07-03
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/11544]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Sun, QL (reprint author), Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China, Peoples R China
作者单位	1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Univ Bergen, Ctr Geobiol, N-5014 Bergen, Norway 4.Statoil ASA, Stavanger, Norway 5.Supervis & Technol Co, CNOOC Energy Technol & Serv Ltd, Tianjin 300452, Peoples R China 6.PetroChina Hangzhou Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China 7.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Sun, Qiliang,Wu, Shiguo,Hovland, Martin,et al. The morphologies and genesis of mega-pockmarks near the Xisha Uplift, South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2011,28(6):1146-1156.
APA	Sun, Qiliang.,Wu, Shiguo.,Hovland, Martin.,Luo, Peng.,Lu, Yintao.,...&Sun, QL .(2011).The morphologies and genesis of mega-pockmarks near the Xisha Uplift, South China Sea.MARINE AND PETROLEUM GEOLOGY,28(6),1146-1156.
MLA	Sun, Qiliang,et al."The morphologies and genesis of mega-pockmarks near the Xisha Uplift, South China Sea".MARINE AND PETROLEUM GEOLOGY 28.6(2011):1146-1156.