郯庐断裂带南段双山韧—脆性剪切带物质迁移与CO2释放研究

根据动力变质作用的特点，在野外和室内正确鉴别区分郯庐断裂安徽肥东双山一带不同变质等级的动力变质带的矿物组合特点，应用体积亏损-元素得失方程，计算了在应力作用条件下，不同变质带内，不同等级的碳酸盐岩地层的各元素（组分）的得失状况，特别仔细地深入地模拟计算了不同岩性的动力变质岩的构造应力作用下的CO2的释放量和释放机制，从而为探讨和研究动力变质作用下，碳酸盐岩地区岩石生成CO2的过程提供理论和实践上的依据。

Study on the Element Migrations and CO2 Releasing in the Shuangshan Ductile-Brittle Shear Zone from the South Tan-Lu Fault Belt

According to the dynamic metamorphic characteristics, different metamorphic belts and mineral assem-blages have been identified with the microscopic method combined with field observations in the Shuangshan area, southern part of Tan-Lu fault belt within Anhui Province. Using the volume loss-element migration equa-tion , the gain and loss of different elements and components have been calculated in different dynamic metamor-phic belts, especially paying attention to the calculation of the releasing of CO2 in carbonate rocks. The mecha-nism of the releasing of CO2 has been discussed. The results have founded a theoretical and practical basis for studying CO2 releasing during the process of dynamic metamorphism in carbonate regions.