Miravalles volcan
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Miravalles livres
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Miravalles livres
Style éruptif tipique: unspecified
Eruptions du volcan Miravalles: 1946
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Eruptions du volcan Miravalles: 1946
| Heure | Mag. / Depth | Distance | Location |
| Sun, 14 Oct | |||
| Sun, 14 Oct 07:34 UTC | M 2.7 / 5 km | 11 km | 10 km al Este de Tierras Morenas, Tilaran. |
| Sat, 6 Oct | |||
| Sat, 6 Oct 00:35 UTC | M 4.1 / 3 km | 9 km | 5 km al Oeste de Aguas Claras, Upala. |
| Mon, 1 Oct | |||
| Mon, 1 Oct 04:56 UTC | M 2.8 / 148 km | 7 km | 4 km al Este de Bijagua, Upala. |
| Tue, 25 Sep | |||
| Tue, 25 Sep 09:05 UTC | M 3.0 / 94 km | 23 km | 2 km al Este de Tronadora, Tilaran. |
| Tue, 25 Sep 08:25 UTC | M 3.0 / 71 km | 25 km | 2 km al Sur de Tilaran, Guanacaste. |
Introduction:
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
Derniers images satellite
