Carbon Isotope Evidence of Gas Hydrate Dissociation in st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on">South China Seast1:place>
详细信息
- 责任者：Wang Shuhong (Key Laboratory of Marginal Sea Geology ; South China Sea Institute of Oceanology ; Chinese Academy of Sciences ; Guangzhou 510301 ; China) ; Yan Wen
- 刊名：Earth Science
- 出版年：2010
- 卷期：35(4)
- 关键词：天然气水合物 ; gas hydrates ; 碳同位素 ; carbon isotopes ; 南海 ; South China Sea
- 页码：p.526-532
- 图表：2 illus., 40 refs.
- 分类号：1003
- issnNo：ISSN1000-2383
- isbnNo：CN42-1233/P
摘要
High-resolution carbon and oxygen isotope analysis for cores NS93-5 and NS97-37 from southern South China Sea (SCS) shows the rapid negative excursion of carbon isotope in the last deglaciation (about 18 ka) and the penultimate deglaciation (about 130 ka). In the same layer, the oxygen isotope also displays similar phenomena. It is found that the Globigerinoides rubber (Pink) died out in midpoint of MIS5/6 (about 129.84 ka).The change of carbon and oxygen isotope is in consonance with atmospheric methane concentration from the Vostok ice core.