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Fatty-acids and their delta C-13 characteristics of seep carbonates from the northern continental slope of Gulf of Mexico
Guan HongXiang1,2,3; Feng Dong1; Wu NengYou1,2; Chen DuoFu1,2; Roberts, H. H.4; Wu DaiDai2
2010-03-01
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume55Issue:8Pages:730-735
Contribution Rank[Guan HongXiang; Feng Dong; Wu NengYou; Chen DuoFu] Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China; [Guan HongXiang; Wu NengYou; Chen DuoFu; Wu DaiDai] Chinese Acad Sci, CAS Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China; [Guan HongXiang] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Roberts, H. H.] Louisiana State Univ, Inst Coastal Studies, Baton Rouge, LA 70803 USA
Corresponding Authorcdf@gig.ac.cn
Cooperation Status国际
AbstractHere we reported the fatty-acids and their delta C-13 values in seep carbonates collected from Green Canyon lease block 185 (GC 185; Sample GC-F) at upper continental slope (water depth:similar to 540 m), and Alaminos Canyon lease block 645 (GC 645; Sample AC-E) at lower continental slope (water depth: similar to 2200 m) of the Gulf of Mexico. More than thirty kinds of fatty acids were detected in both samples. These fatty acids are maximized at C-16. There is a clear even-over-odd carbon number predominance in carbon number range. The fatty acids are mainly composed of n-fatty acids, iso-/anteiso-fatty acids and terminally branched odd-numbered fatty acids (iso/anteiso). The low delta C-13 values (-39.99aEuro degrees to.32.36aEuro degrees) of n-C-12:0, n-C-13:0, i-C-14:0 and n-C-14:0 suggest that they may relate to the chemosynthetic communities at seep sites. The unsaturated fatty acids n-C-18:2 and C-18:1 Delta(9) have the same delta C-13 values, they may originate from the Beggiatoa/Thioploca. Unlike other fatty acids, the terminally branched fatty acids (iso/anteiso) show lower delta C-13 values (as low as -63.95aEuro degrees) suggesting a possible relationship to sulfate reducing bacteria, which is common during anaerobic oxidation of methane at seep sites.
SubtypeArticle
Other AbstractHere we reported the fatty-acids and their delta C-13 values in seep carbonates collected from Green Canyon lease block 185 (GC 185; Sample GC-F) at upper continental slope (water depth:similar to 540 m), and Alaminos Canyon lease block 645 (GC 645; Sample AC-E) at lower continental slope (water depth: similar to 2200 m) of the Gulf of Mexico. More than thirty kinds of fatty acids were detected in both samples. These fatty acids are maximized at C-16. There is a clear even-over-odd carbon number predominance in carbon number range. The fatty acids are mainly composed of n-fatty acids, iso-/anteiso-fatty acids and terminally branched odd-numbered fatty acids (iso/anteiso). The low delta C-13 values (-39.99aEuro degrees to.32.36aEuro degrees) of n-C-12:0, n-C-13:0, i-C-14:0 and n-C-14:0 suggest that they may relate to the chemosynthetic communities at seep sites. The unsaturated fatty acids n-C-18:2 and C-18:1 Delta(9) have the same delta C-13 values, they may originate from the Beggiatoa/Thioploca. Unlike other fatty acids, the terminally branched fatty acids (iso/anteiso) show lower delta C-13 values (as low as -63.95aEuro degrees) suggesting a possible relationship to sulfate reducing bacteria, which is common during anaerobic oxidation of methane at seep sites.
KeywordFatty Acids Carbon Isotope Of Individual Lipid Sulfate Reducing Bacteria Anaerobic Oxidation Of Methane Seep Carbonate Gulf Of Mexico
Subject AreaScience & Technology - Other Topics
WOS HeadingsScience & Technology
DOI10.1007/s11434-009-0478-7
WOS Subject ExtendedScience & Technology - Other Topics
URL查看原文
WOS KeywordANAEROBIC METHANE OXIDATION ; GAS HYDRATE ; CHEMOSYNTHETIC COMMUNITIES ; ISOTOPIC EVIDENCE ; MARINE-SEDIMENTS ; LIPID BIOMARKERS ; ORGANIC-MATTER ; COLD SEEPS ; BUSH-HILL ; CHINA SEA
Indexed BySCI
Language英语
Funding OrganizationNational Basic Research Program of China [2009CB219508]; National Natural Science Foundation of China [40725011, U0733003]; State Key Laboratory of Organic Geochemistry [OGL-200811]; Knowledge Innovation Program of Chinese Academy of Sciences [KGCX2-YW-805]
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000275400900010
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/8511
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, CAS Key Lab Marginal Sea Geol, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Louisiana State Univ, Inst Coastal Studies, Baton Rouge, LA 70803 USA
Recommended Citation
GB/T 7714
Guan HongXiang,Feng Dong,Wu NengYou,et al. Fatty-acids and their delta C-13 characteristics of seep carbonates from the northern continental slope of Gulf of Mexico[J]. CHINESE SCIENCE BULLETIN,2010,55(8):730-735.
APA Guan HongXiang,Feng Dong,Wu NengYou,Chen DuoFu,Roberts, H. H.,&Wu DaiDai.(2010).Fatty-acids and their delta C-13 characteristics of seep carbonates from the northern continental slope of Gulf of Mexico.CHINESE SCIENCE BULLETIN,55(8),730-735.
MLA Guan HongXiang,et al."Fatty-acids and their delta C-13 characteristics of seep carbonates from the northern continental slope of Gulf of Mexico".CHINESE SCIENCE BULLETIN 55.8(2010):730-735.
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