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Miravalles vulkaan

Stratovulkaan 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Current status: normal or dormant (1 out of 5) | Reports
Miravalles vulkaan boeken
Typical eruption style: niet gespecifieerd
Miravalles vulkaanuitbarstingen: 1946 
TijdMag. / DiepteAfstandLocatie
Tue, 12 Nov 2019
Tue, 12 Nov 08:06 UTCM 2.9 / 5 km9 km2 km al Este de Fortuna, Bagaces. (Costa Rica)
Thu, 31 Oct 2019
Thu, 31 Oct 06:29 UTCM 3.5 / 5 km6 km8 km al Sureste de Aguas Claras, Upala. (Costa Rica)
Fri, 18 Oct 2019
Fri, 18 Oct 15:18 UTCM 3.3 / 4 km6 km4 km al Oeste de Mogote, Bagaces. (Costa Rica)

Background:

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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