| Abstract |
A model is presented of a hydrothermal reservoir containing a reactive fluid dominated by CO2. We then consider the effect of a pulse of magmatic vapour into the base of this reservoir, and calculate the changed chemical and physical conditions as the reservoir is allowed to evolve for 15,000 years. The chemistry in the reservoir is described by eleven component species, H2O, H+, Cl-, SO4 =, HCO3 -, HS-, SiO2, Al+++, Ca++, K+ and Na+. Associated with these components are 32 secondary species, nine minerals and four gases. |