论文部分内容阅读
运用激光拉曼探针对中国东部地区新生代几个典型的玄武岩中橄榄岩包体和大别山—胶南造山带出露的超高压变质岩—榴辉岩包裹体的气液相成分进行了详细的测定，得出几个基本结论：（１）地幔流体中含有较高的气相组成，其中以无机的ＣＯ２、ＣＯ、Ｎ２、Ｈ２Ｓ为主；（２）地幔岩包裹体成分的不均一性反映了其源区的不均一性和地幔的交代作用；（３）在个别地幔岩包裹体中还检测到高含量的ＣＨ４和Ｈ２。上述事实表明中国东部郯庐断裂系统地幔深处可能蕴藏丰富的二氧化碳气体、烃类气体和其它可燃性的气体资源。本研究对中国东部地幔流体组成和无机成因的非烃气（特别是ＣＯ２气）成因和成藏的可能的探讨提供了重要证据。
Laser Raman probes were used to describe the gas-liquid composition of several typical basaltic peridotite inclusions in the Cenozoic Era and ultrahigh-pressure metamorphic-eclogite inclusions in the Dabie-Jiaonan orogenic belt in eastern China The main conclusions are as follows: (1) The mantle fluid contains high gas phase composition, especially inorganic CO2, CO, N2 and H2S; (2) The heterogeneity of mantle rock inclusion reflects The heterogeneity of source area and the metasomatism of mantle; (3) high content of CH4 and H2 are also detected in individual mantle rock inclusions. The above facts indicate that there may be abundant carbon dioxide gas, hydrocarbon gas and other flammable gas resources in the deep mantle of the Tan-Lu fault system in eastern China. This study provides important evidence for the possible discussion of the genesis and accumulation of non-hydrocarbon gas (especially CO2 gas) in the mantle fluid composition and inorganic origin of the eastern China.