Geothermometry and water—rock interaction in selected thermal systems in the cascade range and modoc plateau, western United States
| Autor: | R.H. Mariner, Theresa S. Presser, William C. Evans |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Delta
geography Plateau geography.geographical_feature_category Anhydrite Isotope Renewable Energy Sustainability and the Environment Chemistry business.industry Stable isotope ratio Geothermal energy Mineralogy Geology Geotechnical Engineering and Engineering Geology chemistry.chemical_compound Deuterium Sulfate business |
| Zdroj: | Geothermics. 22:1-15 |
| ISSN: | 0375-6505 |
| Popis: | The sulfate-water isotope geothermometer indicates higher equilibrium temperature than the silica or cation ratio geothermometer for the Na-Cl and Na-Ca-Cl thermal waters of the Cascade Range, Oregon and the Na-SO[sub 4] thermal waters of the Modoc Plateau, northeastern California. Sulfate concentrations in the Na-Ca-Cl waters decrease as [delta][sup 18]O values of the dissolved sulfate become more depleted; conversely, sulfate concentrations in the Na-SO[sub 4] waters increase as [delta][sup 18]O values of the sulfate become more depleted. Calculations show that the thermal waters are theoretically saturated with respect to anhydrite (CaSO[sub 4]) at temperature very close to those calculated from the sulfate-water isotope geothermometer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|