【摘要】 评价盆地天然气资源的首要问题是确定天然气的来源。指出,阜新盆地是断陷型裂谷盆地,其中具有沟通地幔和岩石圈的深大断裂,地幔物质沿该深大断裂将大量无机成因天然气带入地球浅部聚集;聚集的天然气具有甲烷含量高、甲烷碳同位素和二氧化碳碳同位素值高3、H e/4H e值较高等特点。认为盆地存在有源于地幔的无机成因气,这种无机气与浅部地层的有机成因气混合后可以形成气藏。更多还原

【Abstract】 To confirm the source of natural gas is essential to estimate the resource in a basin.Fuxin basin is a rift basin which has discordogenic faults.The inorganic natural gas followed along with these faults and gather in shallow stratum;the CH₄ content is high;δ¹3C₁ is-30.13‰^-19.94‰,and（）³He/（）⁴He and δ¹³C_CO₂ is high too.Its’ characteristics indicate there are some anorganic gas in the Fuxin basin and the anorganic gas can form the gas pool interfused with organic natural gas.更多还原