Accumulated Mechanisms for Different Genetic Types of Non-biological CO2 and Controlling Factors in North Marginal Basins, South China Sea
详细信息
- 责任者：He Jiaxiong (Key Laboratory of Marginal Sea Geology ; Chinese Academy of Sciences ; Guangzhou 510640 ; China) ; Zhu Youhai
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(6)
- 关键词：成藏模式 ; pool-formed model ; 二氧化碳 ; carbon dioxide ; 南海 ; South China Sea
- 页码：p.935-942
- 图表：4 illus., 1 table, 24 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
There is plenty of non-biological CO2 in the north marginal basins of South China Sea. Based on patterns of gas origins and classified parameters (i.e.: δ13CCO2, 3He/4He) as well as specific geological conditions of gas migration and accumulation, two types of CO2 sources are classified into crustal-type CO2 or mixing of crust-mantle mixed type CO2 controlled by both muddy diapiric thermal fluid, and mantle-type CO2 acted by mantle-derived volcanic activity and deep fault. The crustal-type and mixing of crust-mantle type CO2 is widely distributed. The mantle-type CO2 accumulation is mainly controlled by mantle-derived volcanic activity and deep fault.