Miravalles Volcano
Updated: 25 avril. 2024 16:04 GMT -
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5)
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5)
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Eruptions du volcan Miravalles: 1946
Derniers séismes proches
Heure | Mag. / Profondeur | Distance / Lieu | |||
22 avril 03:33 (Costa Rica) | 3.4 6 km | 27 km au sud-est | Costa Rica: 9 km al Este de Tierras Morenas, Tilaran. I FELT IT | Info | |
dimanche, 21 avril 2024 GMT (1 séisme) | |||||
20 avril 20:42 (Costa Rica) | 3.1 123 km | 11 km au sud-est | Costa Rica: 1 km al Sur de Rio Naranjo, Bagaces. I FELT IT | Info | |
dimanche, 14 avril 2024 GMT (1 séisme) | |||||
14 avril 03:13 (Costa Rica) | 2.6 3 km | 16 km à l'est | Costa Rica: 6 km al Sureste de Bijagua, Upala. | Info | |
vendredi, 12 avril 2024 GMT (1 séisme) | |||||
11 avril 22:58 (Costa Rica) | 2.5 3 km | 12 km à l'est | Costa Rica: 2 km al Este de Bijagua, Upala. | Info |
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