| Title | The Geochemistry of the San Ignacio Hot Springs, Honduras |
|---|---|
| Authors | Truesdell, A. H.; Janik, C. J.; Goff, F.; Grigsby, C. O.; Shevenell, L.; Paredes P., R. |
| Year | 1986 |
| Conference | Geothermal Resources Council Transactions |
| Keywords | Exploration; Geochemical Survey; Honduras; Department de Francisco Morazon; La Tembladera; Faults; Pluton; Silica; Isotopes; Ph; Hot Springs; Deuterium; Geothermometers; Model; Montanas de la Flor; USGS; Empresa National de Energia Electrica; Arenal Fault |
| Abstract | A geochemical study of thermal fluids from San Ignacio, central Honduras, show that this is a favorable site for geothermal development. Numerous boiling, silica depositing springs and nonboiling hot springs occurs along a fault segment (and associated cross faults) of a major scarp on the north side of the Valle de Siria over an area of about 1 square kilometer. The thermal fluids are not associated with Quaternary volcanism, and water and gas chemistry indicate that they issue from a sedimentary reservoir. Temperatures calculated form chemical, sulfate isotope, and gas geothermometers range from about 160 to 230°C, with the most probably reservoir temperatures near 220°C. The correlation of D with C1 suggest that ascending fluids cool conductively to about 150°C and then cool further by boiling and/or conductive cooling to the surface tempters. Limited mixing with local meteoric water occurs near the surface. |