Evaluation of deep temperatures of hydrothermal systems by a new gas geothermometer
Abstract
The chemical composition of gas mixtures emerging in thermal areas can be used to evaluate the deep thermal temperatures. Chemical analyses of the gas compositions for 34 thermal systems were considered and an empirical relationship developed between the relative concentrations of H 2S, H 2, CH 4 and CO 2 and the reservoir temperature. The evaluated temperatures can be expressed by: t°C = 24775/α + β + 36.05 -273 where α = 2 log CH 4/CO 2 -log H 2/CO 2-3 log H 2S /CO 2 (concentrations in % by volume) and β = 7 logPco2
- Publication:
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Geochimica et Cosmochimica Acta
- Pub Date:
- March 1980
- DOI:
- Bibcode:
- 1980GeCoA..44..549D