2 spots left on Iceland Geo Tour 16-30 July 2022

Orosí volcano

Updated: Jul 5, 2022 09:14 GMT - Refresh
Stratovolcanoes 1659 m / 5,443 ft
Costa Rica, 10.98°N / -85.47°W
Current status: normal or dormant (1 out of 5)

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Typical eruption style: unspecified
Orosí volcano eruptions: unknown, no recent eruptions
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Wednesday, June 29, 2022 GMT (1 quake)
Jun 29, 2022 5:05 am (GMT -6) (Jun 29, 2022 11:05 GMT)
3.1

206 km
29 km (18 mi)
Departamento de Rivas, 15 km northwest of San Jose, Costa Rica
Monday, June 27, 2022 GMT (1 quake)
Jun 27, 2022 11:39 am (GMT -6) (Jun 27, 2022 17:39 GMT)
3.2

3 km
59 km (37 mi)
31 km southeast of San Jose, Upala, Provincia de Alajuela, Costa Rica
Friday, June 24, 2022 GMT (1 quake)
Jun 24, 2022 3:37 am (GMT -6) (Jun 24, 2022 09:37 GMT)
2.5

4 km
46 km (29 mi)
21 km south of San Jose, Upala, Provincia de Alajuela, Costa Rica
Wednesday, June 22, 2022 GMT (1 quake)
Jun 22, 2022 4:42 pm (GMT -6) (Jun 22, 2022 22:42 GMT)
2.8

3 km
44 km (27 mi)
31 km east of Liberia, Provincia de Guanacaste, Costa Rica
Tuesday, June 21, 2022 GMT (1 quake)
Jun 21, 2022 9:37 am (GMT -6) (Jun 21, 2022 15:37 GMT)
3.0

172 km
86 km (53 mi)
49 km east of San Jose, Upala, Provincia de Alajuela, Costa Rica

Background

Orosí is one of a cluster of four eroded and vegetated cones in the Guanacaste Range at the NW corner of Costa Rica. Volcán Orosí itself has a conical shape as viewed from the north or west, but its flanks are heavily eroded. The complex includes Orosí, Orosilito, Volcán Pedregal, and Cacao. The highest peak of the volcanic complex is 1659-m-high Volcán Cacao, 5.5 km SE of Orosí. The summit of Cacao is cut by two large horseshoe-shaped calderas breached to the SW and east related to edifice collapse. The age of the latest activity of the Orosí complex is not known. Historical eruptions were reported from Orosí in 1844 and 1849, but even at the time of the first volcanological observations at the end of the 19th century, Orosí was overgrown with large trees, and the eruptions may actually have been from neighboring Rincón de la Vieja volcano. The latest documented volcanic activity at Orosí produced mudflows (perhaps secondary) about 3500 years ago.
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Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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