Contribution of thermogenic organic matter to the formation of biogenic gas hydrate: Evidence from geochemical and microbial characteristics of hydrate-containing sediments in the Taixinan Basin, South China Sea

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• 作者：Junli Gong^a ; ^c ; Xiaoming Sun^a ; ^b ; ^c ; ^d ; ^{eessxm@mail.sysu.edu.cn} ; Li Xu^b ; Hongfeng Lu^e
• 关键词：Gas hydrates ; Taixinan Basin ; South China Sea ; Methanogens ; Secondary microbial methane
• 刊名：Marine and Petroleum Geology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：80
• 期：Complete
• 页码：432-449
• 全文大小：5344 K
• 卷排序：80

文摘

The geochemical and microbial characteristics of gas hydrate-containing sediments from the Taixinan Basin were analyzed. TOC content meets the threshold for situ gas hydrate formation but cannot form high saturated gas hydrates. Indicators of microbes associated with thermogenic organic matters were measured. Secondary biogenic methane was inferred in forming high-saturation biogenic hydrates.