Geothermometry and water-rock interaction in selected thermal systems in the Cascade Range and Modoc Plateau, western United States
Journal Article
·
· Geothermics (International Journal of Geothermal Research and its Applications); (United States)
- Geological Survey, Menlo Park, CA (United States)
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.
- OSTI ID:
- 6093836
- Journal Information:
- Geothermics (International Journal of Geothermal Research and its Applications); (United States), Journal Name: Geothermics (International Journal of Geothermal Research and its Applications); (United States) Vol. 22:1; ISSN GTMCAT; ISSN 0375-6505
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
150200* -- Geology & Hydrology of Geothermal Systems
152003 -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CALCIUM SULFATES
CASCADE MOUNTAINS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY SYSTEMS
FLUIDS
GEOTHERMAL FLUIDS
GEOTHERMAL SYSTEMS
GEOTHERMOMETRY
HALIDES
HALOGEN COMPOUNDS
HYDROTHERMAL SYSTEMS
MOUNTAINS
OXYGEN COMPOUNDS
ROCK-FLUID INTERACTIONS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS
150200* -- Geology & Hydrology of Geothermal Systems
152003 -- Geothermal Data & Theory-- Rock-Water-Gas Interactions
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CALCIUM SULFATES
CASCADE MOUNTAINS
CHLORIDES
CHLORINE COMPOUNDS
ENERGY SYSTEMS
FLUIDS
GEOTHERMAL FLUIDS
GEOTHERMAL SYSTEMS
GEOTHERMOMETRY
HALIDES
HALOGEN COMPOUNDS
HYDROTHERMAL SYSTEMS
MOUNTAINS
OXYGEN COMPOUNDS
ROCK-FLUID INTERACTIONS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS