Geochemistry of hydrothermally altered rocks from Los Azufres geothermal field, Mexico
Qualitative and semi-quantitative studies of element mobility at Los Azufres geothermal field, Michoacán, Mexico, werecarried out, in order to get a better understanding of the hydrothermal alteration processes that affected the volcanic rocks fromthis area. X-ray fluorescence techniques were applie...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1998 |
| País: | México |
| Institución: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:56837305 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=56837305 |
| Access Level: | acceso abierto |
| Palabra clave: | Ciencias de la Tierra element mobility Geothermal systems Mexican Volcanic Belt hydrothermal alteration |
| Sumario: | Qualitative and semi-quantitative studies of element mobility at Los Azufres geothermal field, Michoacán, Mexico, werecarried out, in order to get a better understanding of the hydrothermal alteration processes that affected the volcanic rocks fromthis area. X-ray fluorescence techniques were applied to analyse well cuttings and drill cores from wells Az-3, Az-26 and Az-52 atdifferent depths. With these analyses a 2000-m thick volcanic sequence was recorded. Geochemically these rocks form a calcalkalinetrend from basaltic to rhyolitic composition. Comparing the chemical composition of altered samples with that of freshsamples from the surface we find relatively low element mobility during alteration. Simple calculations of element loss and gainindicate a weak silicification and low mobility of alkalis. |
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