• 责任者：Guan Hongxiang (Key Laboratory of Renezoable Energy and Gas Hydrate ; Guangzhou Institute of Energy Conversion ; Chinese Academy of Sciences ; Guangzhou 530640 ; China) ; Wu Nengyou
• 刊名：Earth Science
• 出版年：2013
• 卷期：38(5)
• 关键词：碳酸盐岩油气藏 ; carbonate reservoir ; 天然气水合物 ; gas hydrates ; 南海 ; South China Sea
• 页码：p.1014-1022
• 图表：4 illus., 2 tables, 45 refs.
• 分类号：1003
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

     The lipid biomarkers of hopanoid acids in cold seep carbonates from the South China Sea continental slope are investigated.In the hopanoid acids,17β（H）,21β（H）-30-hopanoid acid-17β（H）,21β（H）-33-hopanoid acid are identified with 17β（H）,21β（H）-32-hopanoid acid being the most aboundant.The 17β（H）,21β（H）-32-hopanoic acid depleted in 13 C and theδ13 C value（-69.8‰）fall close to the range of SRB（sulfate-reducing bacteria）-derived iso-/anteiso-C15∶0（-75.2‰to-90.0‰）in site1 seep carbonate（TVG3-C2,ANME-2dominated）,suggesting the incorporation of methane-derived carbon.Although they show non-seep isotopic signatures（-30.7‰to-40.3‰,ANME-1dominated）in site3（TVG8-C5）and site2seep carbonates（TVG13-C3and TVG14-C2）,hopanoidsδ13 C values fall close to the range of SRB-derived iso-/anteiso-C15：0（-32.5‰ to-49.8‰）.The majority of SRB are not involved in AOM（anaerobic oxidization of methane）possibly because ANME-1cells often occur as monospecific aggregates.