Application of Gas and Water Chemistry to Various Geothermal Systems in India

Gas and water studies on sixteen geothermal manifestations (34-97°C) from four geothermal provinces of India have been used to evaluate the reservoir temperatures. The pH of deep thermal waters and partial pressures of CO₂ gas have been estimated at probable rock-water equilibrium temperatures. Sub-surface temperatures for geothermal manifestations as estimated by gas and silica geothermometers range from 50 to 163°C and show a good correlation.