墨西哥湾深水下陆坡区冷泉碳酸盐岩中的环烷烃及单环芳烃的特征与来源
DISTRIBUTION AND ORIGIN OF CYCLOALKANE AND MONOCYCLICAROMATIC IN SEEP-CARBONATES FROM LOWER SLOPES OF GULF OF MEXICO
查看参考文献25篇
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文摘
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研究了墨西哥湾水深约2 200 m的下陆坡Alaminos Canyon 645区块(AC 645区)冷泉碳酸盐岩中含量较高的烷基环戊烷、烷基环己烷、直链烷基苯及苯基烷烃化合物的组成和分布特征。烷基环戊烷和烷基环己烷以低碳数烃占绝对优势,主峰碳分别为C_(14)和C_(15),目前发现的烷基环己烷主要来源于嗜热嗜酸的细菌或藻类直链脂肪酸经环化作用的产物。烷基苯碳数分布范围为C_(13)—C_(23),以C_(13)—C_(20)的低碳数烷基苯为主,主峰碳为C_(16),具有明显偶碳优势,很可能来源于冷泉渗漏环境中的喜盐细菌。 |
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其他语种文摘
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Reported in this paper are the composition and distribution of alkyl cyclopentanes,alkyl cyclohexanes,linear alkylbenzenes and phenylalkanes in the seep carbonate from AC 645(Sample AC-E) at the lower slope of Gulf of Mexico,where the water depth is 2 200 m.The distribution of alkyl cyclopentanes and alkyl cyclohexanes is similar to normal alkanes,which are dominated by low molecular weight compounds and maximized at C_(14),C_(15),respectively, suggesting that the alkyl cyclopentanes and alkyl cyclohexanes are mainly originated from bacteria and phytoplankton.The carbon number of alkylbenzenes are C_(13)—C_(23),obviously dominated by even-numbered carbon and maximized at C_(16),which are probably originated from halophilic bacteria or bacterium or sulfate-reducing bacteria in seep site,and the three group phenylalkanes are likely originated from blue green microalgae and planktonic organisms. |
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来源
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海洋地质与第四纪地质
,2010,30(3):113-118 【核心库】
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关键词
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烷基环戊烷
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烷基环己烷
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烷基苯
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苯基烷烃
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冷泉碳酸盐岩
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地址
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1.
中国科学院广州能源研究所, 中国科学院可再生能源与天然气水合物重点实验室, 广州, 510640
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广州地球化学研究所, 中国科学院边缘海地质重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0256-1492 |
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学科
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海洋学 |
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基金
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中国科学院广州能源研究所中国科学院可再生能源与天然气水合物重点实验室基金
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中国科学院知识创新工程重要方向项目
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国家自然科学基金国家杰出青年科学基金
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国家自然科学基金-广东联合基金
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国家973计划
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文献收藏号
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CSCD:3903476
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