| Title | Selected Chemical Analysis and Geothermometry of Hot Spring Waters from the Calabozos Caldera, Central Chile |
|---|---|
| Authors | Thompson, J. M.; Grunder, A. L.; Hildreth, Wes |
| Year | 1983 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; Chile; Calabozos; Caldera |
| Abstract | Hot springs discharging from the active hydrothermal system associated with the Calabozos caldera, Chile, have measured orifice temperatures as high as 98.5°C and calculated geothermometers temperatures as high as 250°C. Three types of spring waters can be identified form the chemical analyses: a Na=C1 type, a Na-HCO3 type and a Na-mixed anion type. Chloride enthalpy relations indicate that the hydrothermal reservoir water may attain temperatures near 342°C and that most spring waters are mixed with cold meteoric water. Despite the proximity of Mesozoic marine gypsum deposits, the C1/Br weight ratio of the Calabozos spring waters does not appear to indicate that these waters have a indicate "marine" signature. |