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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
发表期刊CHINESE SCIENCE BULLETIN
ISSN1001-6538
卷号55期号:8页码:730-735
产权排序[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
通讯作者cdf@gig.ac.cn
合作性质国际
摘要Here 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.
文章类型Article
其他摘要Here 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.
关键词Fatty Acids Carbon Isotope Of Individual Lipid Sulfate Reducing Bacteria Anaerobic Oxidation Of Methane Seep Carbonate Gulf Of Mexico
学科领域Science & Technology - Other Topics
WOS标题词Science & Technology
DOI10.1007/s11434-009-0478-7
研究领域[WOS]Science & Technology - Other Topics
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关键词[WOS]ANAEROBIC METHANE OXIDATION ; GAS HYDRATE ; CHEMOSYNTHETIC COMMUNITIES ; ISOTOPIC EVIDENCE ; MARINE-SEDIMENTS ; LIPID BIOMARKERS ; ORGANIC-MATTER ; COLD SEEPS ; BUSH-HILL ; CHINA SEA
收录类别SCI
语种英语
项目资助者National 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类目Multidisciplinary Sciences
WOS记录号WOS:000275400900010
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被引频次:3[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/344007/8511
专题中国科学院广州能源研究所
作者单位1.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
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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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