Geochemical evaluation of the geothermal resources in the San Marcos region, Guatemala
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Abstract
The chemical and isotopic compositions of hot springs in the San Marcos region of Guatemala are internally consistent with a hydrologic model in which a deep 240°C reservoir and one or more shallow 195–200°C reservoirs are present. Variations in hot-spring water compositions results from a combination of boiling, mixing with cold, dilute water, and chemical re-equilibration with decreasing temperature. The recharge water for the deep 240°C reservoir is isotopically heavier than the local meteoric water and probably comes from many kilometers to the west or southwest. The water in the shallow reservoir is a mixture of the 240°C water with about 20 ± 5% of cold, locally derived meteoric water. After mixing, the water in the shallow reservoir re-equilibrates with reservoir rock at 195–200°C. In some places additional mixing with cold water occurs after water leaves the shallow reservoir.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Geochemical evaluation of the geothermal resources in the San Marcos region, Guatemala |
| Series title | Applied Geochemistry |
| DOI | 10.1016/0883-2927(86)90003-X |
| Volume | 1 |
| Issue | 2 |
| Year Published | 1986 |
| Language | English |
| Publisher | Elsevier |
| Description | 9 p. |
| First page | 189 |
| Last page | 197 |
| Country | Guatemala |
| Other Geospatial | San Marcos region |
| Google Analytic Metrics | Metrics page |