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利用显微测温方法,发展了一种新的图解方法来确定 CO_2-H_2O 包裹体的成分和体积性质。对于一个 CO_2-H_2O 包裹体来说,只要下列四个变量中两个的值已知: 1.根据部分均一温度和均一方式求得的 CO_2相的密度;2.完全均一温度和均一的方式;3.40℃对 CO_2相的体积分数;4.CO_2相的摩尔分数.则另两个变量的值可以根据四个变量间关系绘制的图解中予以确定.这种图解通常可以依据部分和完全均一温度的测定结果求得 CO_2相的体积分数.相反,图解也可用于确定一个在达到完全均一之前就已爆裂的包裹体的理论均一温度,只要能够提供一个较好的目视体积估计值.图解方法也可用于 NaCl 含量≤6%(WNaCl)的 CO_2-H_2O 包裹体.
A new graphical method was developed to determine the composition and volume properties of CO_2-H_2O inclusions by means of microscopic temperature measurement. For a CO_2-H_2O inclusion, the values of two of the following four variables are known: 1. The density of the CO_2 phase as determined by partial homogenization and homogenization; 2. The homogenization of temperature and homogeneity; The volume fraction of CO 2 phase at 3.40 ° C. and the mole fraction of CO 2 phase.The values of the other two variables can be determined from the plot of the relationship between the four variables.The plot can usually be based on the partial and complete homogeneity of temperature On the contrary, the plot can also be used to determine the theoretical homogenization temperature for an inclusion that has burst before reaching complete homogeneity, as long as it provides a good estimate of the visual volume. It can be used for CO_2-H_2O inclusions with NaCl content ≤6% (WNaCl).