Chemical and isotopic composition of water from thermal and mineral springs of Washington
Waters from the thermal springs of Washington range in chemical composition from dilute Na-HCO/sub 3/ to moderately saline CO/sub 2/-charged Na-HCO/sub 3/-Cl type waters. St. Martin's Hot Spring which discharges a slightly saline Na-Cl water, is the notable exception. The dilute Na-HCO/sub 3/ waters are generally associated with granitic intrusions; the warm to hot CO/sub 2/-charged waters issue on or near the large stratovolcanoes. The dilute waters have oxygen-isotopic compositions that indicate relatively little water-rock exchange. The CO/sub 2/-charged waters are usually more enriched in oxygen-18 due to more extensive water-rock reaction. The carbon-13 in the CO/sub 2/-charged thermal waters is more depleted (-10 to -12 %) than in the cold CO/sub 2/-charged soda springs (-2 to -8%) which are also scattered throughout the Cascades. The hot and cold CO/sub 2/-charged waters are supersaturated with respect to CaCO/sub 3/, but only the hot springs are actively depositing CaCO/sub 3/. Baker, Gamma, Sulphur, and Ohanapecosh hot springs seem to be associated with thermal aquifers of more than 100/sup 0/C. As these springs occur as individual springs or in small clusters, the respective aquifers are probably of restricted size.
- Research Organization:
- Geological Survey, Menlo Park, CA (USA)
- OSTI ID:
- 5643265
- Report Number(s):
- USGS-OFR-82-98; ON: DE84900474
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
152001* -- Geothermal Data & Theory-- Properties of Aqueous Solutions
ALKALI METAL COMPOUNDS
CARBON 13
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON ISOTOPES
CARBON OXIDES
CASCADE MOUNTAINS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
DATA
EVEN-ODD NUCLEI
FEDERAL REGION X
Geothermal Legacy
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MINERAL SPRINGS
MOUNTAINS
NORTH AMERICA
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SODIUM COMPOUNDS
STABLE ISOTOPES
THERMAL SPRINGS
THERMAL WATERS
USA
WASHINGTON
WATER SPRINGS