Internal Structure and Hydrothermal Fluid Circulation of Parícutin Volcano, Mexico: Insights Gained From Near-Surface Geophysics
Numerous investigations of Parícutin volcano have been made since its formation during 1943¿1952, but none has utilized geophysical techniques until now. This report summarizes the results of near-surface geophysical surveys conducted during 2017¿2019, involving self-potential, ground-temperature me...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/346120 |
| Acceso en línea: | http://hdl.handle.net/10261/346120 |
| Access Level: | acceso abierto |
| Palabra clave: | Parícutin volcano hydrothermal system Near‐surface geophysical methods Volcano Volcanology |
| Sumario: | Numerous investigations of Parícutin volcano have been made since its formation during 1943¿1952, but none has utilized geophysical techniques until now. This report summarizes the results of near-surface geophysical surveys conducted during 2017¿2019, involving self-potential, ground-temperature measurements, and a 3D resistivity model of the scoria cone. Interpretation of the integrated data enabled the definition of the geometry of the eruption's feeder dyke and a better understanding of the near-surface spatter facies. These geophysical data also better characterized the buried morphology of a horseshoe-shaped crater produced by a cone collapse early in the eruption, as well as the contact between lava flows and overlying pyroclastic fallout deposits. Moreover, the measured conductivities detected several meter-scale zones of convective hydrothermal fluid circulation within the cone. Collectively, the data of this study demonstrate a powerful approach to discern the relationship between the internal structure of a monogenetic cone and its associated hydrothermal system. |
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