Miravalles Volcano
Updated: May 8, 2024 11:02 GMT -
Stratovolcano 2028 m / 6,653 ft
Costa Rica, 10.75°N / -85.15°W
Current status: normal or dormant (1 out of 5)
Costa Rica, 10.75°N / -85.15°W
Current status: normal or dormant (1 out of 5)
[smaller] [larger]
Miravalles volcano eruptions: 1946
Latest nearby earthquakes
Time | Mag. / Depth | Distance / Location | |||
May 4, 02:22 am (Costa Rica) | 2.8 4 km | 27 km (17 mi) to the SE | Costa Rica: 8 km al Este de Tierras Morenas, Tilaran. I FELT IT | Info | |
Sunday, April 28, 2024 GMT (1 quake) | |||||
Apr 28, 10:32 am (Costa Rica) | 2.2 9 km | 17 km (10.4 mi) to the SE | Costa Rica: 7 km al Este de Rio Naranjo, Bagaces. | Info |
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.---
Smithsonian / GVP volcano information