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Fatty-acids and their C-13 signatures in seep carbonates from hydrocarbon seeps on the upper (GC 185) and lower (AC 645) continental slope of the Gulf of Mexico
其他题名墨西哥湾北陆坡区冷泉碳酸盐岩脂肪酸及碳同位素特征
Guan, H. X.1,2,3; Feng, D.2; Wu, N. Y.1; Chen, D. F.2
2009-06-01
发表期刊GEOCHIMICA ET COSMOCHIMICA ACTA
ISSN0016-7037
卷号73期号:13页码:A473-A473
通讯作者cdf@gig.ac.cn
文章类型Meeting Abstract
其他摘要Here we reported the fatty-acids and their δ 13C values in seep carbonates collected from Green Canyon lease block 185 (GC 185; Sample GC-F) at upper continental slope (water depth: ∼540 m), and Alaminos Canyon lease block 645 (GC 645; Sample AC-E) at lower continental slope (water depth: ∼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 C16. 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 δ 13C values (−39.99‰ to.32.36‰) of n-C12:0, n-C13:0, i-C14:0and n-C14:0 suggest that they may relate to the chemosynthetic communities at seep sites. The unsaturated fatty acids n-C18:2 and C18:1Δ9 have the same δ 13C values, they may originate from theBeggiatoa/Thioploca. Unlike other fatty acids, the terminally branched fatty acids (iso/anteiso) show lowerδ 13C values (as low as −63.95‰) 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 脂肪酸 单体化合物稳定 碳同位素 硫酸盐还原菌 甲烷厌氧氧化 冷泉碳酸盐岩 墨西哥湾
WOS标题词Science & Technology ; Physical Sciences
研究领域[WOS]Geochemistry & Geophysics
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收录类别SCI ; ISTP
语种英语
项目资助者国家重点基础研究发展计划(编号: 2009CB219506);国家杰出青年科学基金(批准号: 40725011);NSFC-广东联合基金(批准号: U0733003);中国科学院可再生能源与天然气水合物重点实验室基金(编号: O807J1);中国科学院知识创新工程重要方向性项目(编号: KGCX2-YW-805)
WOS类目Geochemistry & Geophysics
WOS记录号WOS:000267229901177
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/3312
专题中国科学院广州能源研究所
作者单位1.CAS, Guangzhou Ctr Gas Hydrate Res, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.CAS, Guangzhou Inst Geochem, Key Lab Marginal Sea Geol, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Guan, H. X.,Feng, D.,Wu, N. Y.,et al. Fatty-acids and their C-13 signatures in seep carbonates from hydrocarbon seeps on the upper (GC 185) and lower (AC 645) continental slope of the Gulf of Mexico[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2009,73(13):A473-A473.
APA Guan, H. X.,Feng, D.,Wu, N. Y.,&Chen, D. F..(2009).Fatty-acids and their C-13 signatures in seep carbonates from hydrocarbon seeps on the upper (GC 185) and lower (AC 645) continental slope of the Gulf of Mexico.GEOCHIMICA ET COSMOCHIMICA ACTA,73(13),A473-A473.
MLA Guan, H. X.,et al."Fatty-acids and their C-13 signatures in seep carbonates from hydrocarbon seeps on the upper (GC 185) and lower (AC 645) continental slope of the Gulf of Mexico".GEOCHIMICA ET COSMOCHIMICA ACTA 73.13(2009):A473-A473.
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