Miravalles volcano
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Current status: normal or dormant (1 out of 5) | Reports
Miravalles volcano books
Costa Rica, 10.75°N / -85.15°W
Current status: normal or dormant (1 out of 5) | Reports
Miravalles volcano books
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Typical eruption style: sin especificar
Erupciones del volcán Miravalles: 1946
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Erupciones del volcán Miravalles: 1946
| Fecha / Hora | Revista / Profundidad | Distancia | Ubicación |
| Tue, 1 Jan | |||
| Tue, 1 Jan 00:00 UTC | M 3.3 / 100 km | 19 km | COSTA RICA |
| Thu, 27 Dec | |||
| Thu, 27 Dec 08:22 UTC | M 3.4 / 50 km | 24 km | 3 km al Este de Bagaces, Guanacaste. |
| Wed, 19 Dec | |||
| Wed, 19 Dec 13:25 UTC | M 2.7 / 60 km | 29 km | 3 km al Este de Canas, Guanacaste. |
| Tue, 18 Dec | |||
| Tue, 18 Dec 18:27 UTC | M 3.8 / 101 km | 15 km | 6 km al Oeste de Cote, Guatuso. |
| Tue, 18 Dec 09:52 UTC | M 2.7 / 137 km | 11 km | 6 km al Norte de Bijagua, Upala. |
Background:
Miravalles is a 2028-m-high andesitic stratovolcano that is one of five post-caldera cones along a NE-trending line within the broad 15 x 20 km Guayabo (Miravalles) caldera. The caldera was formed during several major explosive eruptions that produced voluminous dacitic-rhyolitic pyroclastic flows between about 1.5 and 0.6 million years ago. Growth of post-caldera volcanoes in the eastern part of the caldera that overtopped much of the eastern and southern caldera rims was interrupted by edifice collapse that produced a major debris avalanche to the SW. Morphologically youthful lava flows cover the western and SW flanks of the post-caldera Miravalles complex, which rises above the town of Guayabo on the flat western caldera floor. The only reported historical eruptive activity was a small steam explosion on the SW flank in 1946. High heat flow remains, and Miravalles is the site of the largest developed geothermal field in Costa Rica.---
Smithsonian / GVP volcano information
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