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Miravalles Volcano

Updated: 25 avril. 2024 15:24 GMT -
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Condition actuelle: normal / en sommeil (1 sur 5)

[smaller] [larger]
Style éruptif tipique: unspecified
Eruptions du volcan Miravalles: 1946 

Derniers séismes proches

HeureMag. / ProfondeurDistance / 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.
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Smithsonian / GVP volcano information

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