Miravalles volcan

Stratovolcano 2028 m / 6,653 ft

Condition actuelle: normal / en sommeil (1 sur 5)

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Style éruptif tipique: unspecified
Eruptions du volcan Miravalles: 1946 

HeureMag. / ProfondeurDistance/Lieu
mercredi, 13. octobre 2021 12:01 GMT (1 séisme)
13 oct. 2021 06:01 (GMT -6) (13. oct. 2021 12:01 GMT)
3.6

161 km		43 km (27 mi)
Costa Rica: 7 Km Al Noroeste De Venado, San Carlos.
lundi, 11. octobre 2021 09:12 GMT (1 séisme)
11 oct. 2021 03:12 (GMT -6) (11. oct. 2021 09:12 GMT)
3.4

11 km		23 km (14 mi)
Costa Rica: 15 Km Al Este De Canas Dulces, Liberia.
samedi, 9. octobre 2021 14:41 GMT (1 séisme)
9 oct. 2021 08:41 (GMT -6) (9. oct. 2021 14:41 GMT)
2.5

10 km		39 km (24 mi)
31 km au nord de Liberia, Provincia de Guanacaste, Costa Rica
vendredi, 8. octobre 2021 09:38 GMT (1 séisme)
8 oct. 2021 03:38 (GMT -6) (8. oct. 2021 09:38 GMT)
2.6

3 km		10.1 km (6.3 mi)
Bagaces, 38 km à l'est de Liberia, Provincia de Guanacaste, Costa Rica

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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