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通过脱水反应的平衡热力学计算确定内蒙古兴和－卓资太古宙孔兹岩系变泥砂质岩中变质峰期ａＨ２Ｏ 总体较低， 变化于０．１２～０．４０ 之间， 黑云紫苏片麻岩中ａＨ２Ｏ为０．２０～０．４３。前者的ｌｏｇｆＯ２ 值最高为－ １３～－ １５， 但在有些岩石中极低，（μＨ２ Ｏ／ＸＢｔＭ ｇ ）Ｐ，Ｔ和（μＯ２ ／ＸＢｔＭ ｇ ）Ｐ，Ｔ的系数主要变化于－ ０．２４１～－ ０．３８３ 和－ １．０５２～－ １．８１０，（μＨ２Ｏ ／μＯ２ ）Ｐ，Ｔ的斜率也有一定变化。这些数值变化特征按 “碳质变质”观点不应出现， 主要也不是脱水熔融作用所致， 它们可能与非完全开放系统中Ｈ２Ｏ较ＣＯ２ 易于逸散有关
Based on the equilibrium thermodynamic calculation of dehydration reaction, the aH2O in the metamorphic peak of the Xinghuo-Zhuozi Archean Kongziyan series in the Xinghuo-Zhuozi Formation in Inner Mongolia is generally low, ranging from 0.12 to 0.40. The aH2O in gneiss is 0.20 ~ 0.43. The logfO2 values of the former are up to -13 ~ -15, but in some rocks, the coefficients of P, T and (μO2 / XBtMg) P and T mainly change from - 0.241 ~ - 0.383 and - 1.052 ~ - 1.810, (μH2O / μO2) P, T slope also has some changes. These numerical changes should not occur due to the “carbonaceous metamorphism”, nor are they primarily due to dehydration melting, which may be related to the easy release of H2O from CO2 in less than fully open systems