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中国ＣＯ２资源的主体———幔源岩浆成因ＣＯ２气集中分布在东部及大陆架的中、新生代伸展盆地，气源断裂及幔源岩浆活动是该类ＣＯ２气藏（田）形成的主要条件。按其成因，ＣＯ２气可分为幔源岩浆成因和热解成因两大类。目前所发现的ＣＯ２气藏（田）圈闭类型几乎都属于断层复合型。
Source of mantle magma in China, the main body of mantle source CO2 gas is concentrated in the Mesozoic and Cenozoic extensional basins in the eastern and continental shelf. Gas source rupture and mantle magmatism are the main conditions for the formation of this type of CO2 gas field. According to its causes, CO2 gas can be divided into mantle magma origin and pyrolysis causes two categories. At present, almost all trap types of CO2 gas reservoirs (fields) are fault complex types.