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Seismic evidence and formation mechanism of gas hydrates in the Zhongjiannan Basin, Western margin of the South China Sea
Lu, Yintao1,2,3; Luan, Xiwu4,5; Lyu, Fuliang2; Wang, Bin2; Yang, Zhili2; Yang, Taotao2; Yao, Genshun2
2017-06-01
发表期刊MARINE AND PETROLEUM GEOLOGY
卷号84页码:274-288
文章类型Article
摘要An analysis of 3D seismic data from the Zhongjiannan Basin in the western margin of the South China Sea (SCS) reveals seismic evidence of gas hydrates and associated gases, including pockmarks, a bottom simulating reflector (BSR), enhanced reflection (ER), reverse polarity reflection (RPR), and a dim amplitude zone (DAZ). The BSR mainly surrounds Zhongjian Island, covering an area of 350 km(2) in this 3D survey area. The BSR area and pockmark area do not match each other; where there is a pockmark developed, there is no BSR. The gas hydrate layer builds upward from the base of the stability zone with a thickness of less than 100 m. A mature pockmark usually consists of an outside trough, a middle ridge, and one or more central pits, with a diameter of several kilometers and a depth of several hundreds of meters. The process of pockmark Creation entails methane consumption. Dense faults in the study area efficiently transport fluid from large depths to the shallow layer, supporting the formation of gas hydrate and ultimately the pockmark. (C) 2017 The Authors. Published by Elsevier Ltd.
关键词Seismic Evidence Gas Hydrate Pockmarks Zhongjiannan Basin South China Sea
DOI10.1016/j.marpetgeo.2017.04.005
收录类别SCI
语种英语
WOS记录号WOS:000401878300017
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136867
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Petrochina Hangzhou Res Inst Geol, Hangzhou 310023, Zhejiang, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Qingdao Inst Marine Geol, Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China
5.Qingdao Natl Lab Marine Sci & Technol, Evaluat & Detect Technol Lab Marine Mineral Resou, Qingdao 266071, Peoples R China
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Lu, Yintao,Luan, Xiwu,Lyu, Fuliang,et al. Seismic evidence and formation mechanism of gas hydrates in the Zhongjiannan Basin, Western margin of the South China Sea[J]. MARINE AND PETROLEUM GEOLOGY,2017,84:274-288.
APA Lu, Yintao.,Luan, Xiwu.,Lyu, Fuliang.,Wang, Bin.,Yang, Zhili.,...&Yao, Genshun.(2017).Seismic evidence and formation mechanism of gas hydrates in the Zhongjiannan Basin, Western margin of the South China Sea.MARINE AND PETROLEUM GEOLOGY,84,274-288.
MLA Lu, Yintao,et al."Seismic evidence and formation mechanism of gas hydrates in the Zhongjiannan Basin, Western margin of the South China Sea".MARINE AND PETROLEUM GEOLOGY 84(2017):274-288.
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