The chemical and hydrologic structure of Poas volcano, Costa Rica
Journal of Volcanology and Geothermal Research
By: G.L. Rowe Jr., S.L. Brantley, J.F. Fernandez, and A. Borgia
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Abstract
Comparison of the chemical characteristics of spring and river water draining the flanks of Poas Volcano, Costa Rica indicates that acid chloride sulfate springs of the northwestern flank of the volcano are derived by leakage and mixing of acid brines formed in the summit hydrothermal system with dilute flank groundwater. Acid chloride sulfate waters of the Rio Agrio drainage basin on the northwestern flank are the only waters on Poas that are affected by leakage of acid brines from the summit hydrothermal system. Acid sulfate waters found on the northwestern flank are produced by the interaction of surface and shallow groundwater with dry and wet acid deposition of SO2 and H2SO4 aerosols, respectively. The acid deposition is caused by a plume of acid gases that is released by a shallow magma body located beneath the active crater of Poas. -from Authors
Suggested Citation
Rowe, G., Brantley, S., Fernandez, J., Borgia, A., 1995, The chemical and hydrologic structure of Poas volcano, Costa Rica: Journal of Volcanology and Geothermal Research, v. 64, no. 3-4, p. 233-267, https://doi.org/10.1016/0377-0273(94)00079-V.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | The chemical and hydrologic structure of Poas volcano, Costa Rica |
| Series title | Journal of Volcanology and Geothermal Research |
| DOI | 10.1016/0377-0273(94)00079-V |
| Volume | 64 |
| Issue | 3-4 |
| Year Published | 1995 |
| Language | English |
| Publisher | Elsevier |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of Volcanology and Geothermal Research |
| First page | 233 |
| Last page | 267 |