论文部分内容阅读
堇青石—石榴石地质温度—压力计已广泛应用于不同成因地质体的形成条件研究。本文介绍了堇青石—石榴石中铁镁置换反应的平衡温度标定、计算方法,并对不同公式计算结果不一致的原因作了讨论,认为用公式 T=(6212+0.035(P—6.10~3)/(2.56+2.1 l_nk_D )计算,其结果与客观地质情况比较符合。最后还讨论了地质压力计及堇青石中水含量对压力计算的影响。
Cordierite - Garnet geological temperature - pressure gauge has been widely used in geological formation of different genetic conditions. This paper introduces the calibration and calculation method of equilibrium temperature of iron-magnesium displacement reaction in cordierite-garnet, and discusses the reasons for the inconsistency of the results of different formulas. It is considered that the formula T = (6212 + 0.035 (P-6.10 ~ 3) / (2.56 + 2.1 l_nk_D), and the result is in good agreement with the objective geological conditions.Finally, the effects of water pressure in geologic pressure gauges and cordierite on pressure calculation are also discussed.