Lipid biomarker patterns of authigenic carbonates reveal fluid composition and seepage intensity at Haima cold seeps, South China Sea

doi:10.1016/j.jseaes.2018.04.035

GIEC OpenIR

	Lipid biomarker patterns of authigenic carbonates reveal fluid composition and seepage intensity at Haima cold seeps, South China Sea
	Guan, Hongxiang1,2 ; Birgel, Daniel 3; Peckmann, Joern 3; Liang, Qianyong 4; Feng, Dong 2,5; Yang, Shengxiong 4; Liang, Jinqiang 4; Tao, Jun 4; Wu, Nengyou2 ; Chen, Duofu 2,6
	2018-12-01
发表期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
卷号	168 页码:163-172
通讯作者	Feng, Dong(feng@scsio.ac.cn)
摘要	Authigenic carbonates retrieved from sites ROV1 and ROV2 of the Haima hydrocarbon seeps of the South China Sea at approximately 1390 m water depth were studied using lipid biomarker analyses. Abundant molecular fossils of anaerobic methane oxidizing archaea (ANME) and sulfate-reducing bacteria (SRB) with strong C-13-depletions (delta C-13 values as low as 126 parts per thousand), in combination with low delta C-13(carbonate) values (-42.7 parts per thousand to -36.8 parts per thousand), provide evidence that anaerobic oxidation of methane (AOM) was the major process driving the precipitation of the studied seep carbonates. The extremely low delta C-13 values of archaeal biomarkers confirm that biogenic methane was the main carbon source, but the seepage of accessory crude oil is also suggested by the presence of unresolved complex mixtures in the hydrocarbon fractions. A suite of C-13-depleted biomarkers indicate the predominance of ANME-1/DSS consortia at both sites, which indicates that the studied carbonates formed during low to medium methane flux. Somewhat higher contents of archaeal biomarkers and their stronger C-13-depletion at site ROV2 probably reflect at least temporarily higher seepage intensities than at site ROV1. Abundant bacterial dialkyl glycerol diethers (DAGEs), revealing a large offset of their delta C-13 values compared to SRB-derived terminally branched fatty acids, were possibly produced by distinct SRB species other than members of the DSS cluster. The encountered hopanoids are attributed to aerobic methanotrophic bacteria based on their moderate C-13-depletion. The application of molecular fossils in combination with their compound-specific isotope signatures is an efficient tool to reconstruct the composition of seepage fluids and seepage intensities.
关键词	South China Sea Cold seeps Authigenic carbonates Lipid biomarkers Anaerobic oxidation of methane
DOI	10.1016/j.jseaes.2018.04.035
关键词[WOS]	SULFATE-REDUCING BACTERIA ; RARE-EARTH-ELEMENTS ; ANAEROBIC OXIDATION ; GAS HYDRATE ; STABLE CARBON ; MICROBIAL CONSORTIA ; METHANE OXIDATION ; CONTINENTAL-SLOPE ; CONVERGENT MARGIN ; ELECTRON-TRANSFER
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFC0306702] ; Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0210] ; Qingdao National Laboratory for Marine Science and Technology[QNLM2016ORP0204] ; NSF of China[41473080] ; NSF of China[41761134084] ; NSF of China[41730528] ; National Special Project on Gas Hydrate of China[DD20160217]
WOS研究方向	Geology
项目资助者	National Key R&D Program of China ; Qingdao National Laboratory for Marine Science and Technology ; NSF of China ; National Special Project on Gas Hydrate of China
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000452945000017
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/24375
专题	中国科学院广州能源研究所
通讯作者	Feng, Dong
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 3.Univ Hamburg, Ctr Erdsyst Forsch & Nachhaltigkeit, Inst Geol, D-20146 Hamburg, Germany 4.Guangzhou Marine Geol Survey, MLR Key Lab Marine Mineral Resources, Guangzhou 510075, Guangdong, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China 6.Shanghai Ocean Univ, Coll Marine Sci, Shanghai Engn Res Ctr Hadal Sci & Technol, Shanghai 201306, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Guan, Hongxiang,Birgel, Daniel,Peckmann, Joern,et al. Lipid biomarker patterns of authigenic carbonates reveal fluid composition and seepage intensity at Haima cold seeps, South China Sea[J]. JOURNAL OF ASIAN EARTH SCIENCES,2018,168:163-172.
APA	Guan, Hongxiang.,Birgel, Daniel.,Peckmann, Joern.,Liang, Qianyong.,Feng, Dong.,...&Chen, Duofu.(2018).Lipid biomarker patterns of authigenic carbonates reveal fluid composition and seepage intensity at Haima cold seeps, South China Sea.JOURNAL OF ASIAN EARTH SCIENCES,168,163-172.
MLA	Guan, Hongxiang,et al."Lipid biomarker patterns of authigenic carbonates reveal fluid composition and seepage intensity at Haima cold seeps, South China Sea".JOURNAL OF ASIAN EARTH SCIENCES 168(2018):163-172.