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为了探讨接触变质带内变碳酸盐岩变质过程CO2 释放的数量和排放CO2的物理、化学及地质条件 ,根据递进变质反应和时间积分流体通量模型 ,定量分析和定量计算了双山地区变碳酸盐岩在接触变质作用中释放CO2 的通量。计算结果得到CO2 的通量值为 0 72 9× 1 0 4 ～ 2 446× 1 0 4 mol cm2 ,CO2 的来源以接触变质反应释放为主 ;CO2 的生成释放与变质程度呈正相关关系。自白云石带至方解石带变质流体中XCO2 不断升高 ,但钙铝榴石带由于岩浆水影响 ,流体通量最高而XCO2 急剧下降。
In order to investigate the quantity of CO2 released during the metamorphic belt metamorphism and the physical, chemical and geological conditions of CO2 emission, according to the progressive metamorphic reaction and time integral fluid flux model, quantitative analysis and quantitative calculation of the double-mountain area Carbonate rock releases flux of CO2 during metamorphism. The calculated CO2 flux is 0 72 9 × 104 ~ 2 446 × 104 mol cm2. The source of CO2 is mainly metamorphic reaction, and the generation and release of CO2 have a positive correlation with the degree of metamorphism. The XCO2 in the metamorphic fluid from dolomite to calcite increases continuously, but the magma water has the highest flux and the XCO2 decreases sharply due to magmatic water.