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Volcano Calendar 2019
Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
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30 mars - 6 avril 2019: Land of Theseus - Saronic Gulf (Greece)
2-17 mai 2019: Du Krakatau à Bali - Java (Indonésie)
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7-12 juin 2019: Expédition au Volcan Yasur - Vanuatu (Mer du Sud)
8-23 juil. 2019: Du Krakatau à Bali - Java (Indonésie)
3-18 sept. 2019: Du Krakatau à Bali - Java (Indonésie)
12-20 oct. 2019: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
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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
Style éruptif tipique: unspecified
Eruptions du volcan Miravalles: 1946 
HeureMag. / DepthDistanceLocation
Thu, 21 Feb 2019
Thu, 21 Feb 14:27 UTCM 2.8 / 127 km3 km14 km al Noroeste de Guayabo, Bagaces. (Costa Rica)
Wed, 20 Feb 2019
Wed, 20 Feb 11:03 UTCM 3.0 / 64 km19 km10 km al Suroeste de Fortuna, Bagaces. (Costa Rica)
Sun, 17 Feb 2019
Sun, 17 Feb 10:56 UTCM 2.6 / 6 km10 km9 km al Este de Tierras Morenas, Tilaran. (Costa Rica)
Fri, 15 Feb 2019
Fri, 15 Feb 04:36 UTCM 2.8 / 5 km6 km2 km al Este de Bijagua, Upala. (Costa Rica)
Thu, 7 Feb 2019
Thu, 7 Feb 03:27 UTCM 2.5 / 6 km8 km9 km al Noreste de Tierras Morenas, Tilaran.
Voir tous

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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