Isotope and chemical geothermometry and its applications

摘要

The Na-K-Mg Geoindicator created by Giggenbach (1988) is convenient to use but it is still based on the empirical geothermometry equations and discrepancy for different cation geo- thermometers is observed. In fact, the location of the curve of "full equilibrium" is different if a dif- ferent Na-K geothermometry equation is used. The difference is pronounced for temperatures lower than about 220deg.C.