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Cold seep systems in the South China Sea: An overview
Feng, Dong1; Qiu, Jian-Wen; Hu, Yu3; Peckmann, Joern4; Guan, Hongxiang5; Tong, Hongpeng3; Chen, Chong6; Chen, Jiangxin7; Gong, Shanggui; Li, Niu; Chen, Duofu1,3
AbstractThree decades after the discovery of cold seep systems, various sites of hydrocarbon seepage have been found in the South China Sea (SCS). Over the past decade, these sites have become model systems for understanding the variability of hydrocarbon seepage and associated biogeochemical processes. In this review, we describe the cold seep systems of the SCS with an emphasis on seafloor manifestations, fluid sources, biogeochemical processes, and macroecology. Seafloor features associated with seeps include mud volcanoes, pockmarks, and carbonate deposits. A common characteristic of cold seeps is the occurrence of authigenic (i.e., in situ precipitated) carbonate minerals. These carbonates commonly exhibit low delta C-13 and high delta O-18 values, suggesting the incorporation of methane-derived carbon and oxygen derived from gas hydrate water. Biogeochemical processes such as sulfate-driven anaerobic oxidation of methane (SD-AOM), the key process at seeps, have been studied in detail with the aim of establishing geochemical proxies to trace these processes into the geological past. We also detail the features characterizing seep ecosystems. Understanding the impact of decomposing methane hydrate on the marine carbon budget remains challenging and requires additional seafloor observations as well as models predicting how gas hydrate responds to changing conditions such as temperature increase, sea level rise, and episodic mass wasting.
KeywordHydrocarbon seep Methane Chemosynthesis Hydrate Carbonate Mud volcano Pockmark South China Sea
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
3.Hong Kong Baptist Univ, Dept Biol, Hong Kong, Peoples R China
4.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China
5.Univ Hamburg, Ctr Earth Syst Res & Sustainabil, Inst Geol, D-20146 Hamburg, Germany
6.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
7.Japan Agcy Marine Earth Sci & Technol JAMSTEC, 2-15 Natsushima Cho, Yokosuka, Kanagawa 2370061, Japan
8.Qingdao Inst Marine Geol, Minist Land & Resources, Key Lab Gas Hydrate, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Feng, Dong,Qiu, Jian-Wen,Hu, Yu,et al. Cold seep systems in the South China Sea: An overview[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,168:3, 16.
APA Feng, Dong.,Qiu, Jian-Wen.,Hu, Yu.,Peckmann, Joern.,Guan, Hongxiang.,...&Chen, Duofu.(2018).Cold seep systems in the South China Sea: An overview.JOURNAL OF ASIAN EARTH SCIENCES,168,3.
MLA Feng, Dong,et al."Cold seep systems in the South China Sea: An overview".JOURNAL OF ASIAN EARTH SCIENCES 168(2018):3.
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