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Location of the past days' earthquakes on Sao Miguel island
Tuesday, Feb 13, 2018
An earthquake swarm has been going on since Monday (12 Feb 2018) in central Sao Miguel island. ... [more]
 

Furnas volcano

stratovolcano 805 m
Sao Miguel Island, Azores, 37.76°N / -25.33°W
Current status: dormant (1 out of 5)
Furnas webcams / live data | Reports
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Last update: 13 Feb 2018 (seismic unrest in central Sao Miguel Island)
Typical eruption style: Explosive
Furnas volcano eruptions: 1439 and 1443 and another in 1630
TimeMag. / DepthDistanceLocation
Sun, 8 Jul
Sun, 8 Jul 10:26 UTCM 2.050 kmNW Formigas
Mon, 2 Jul
Mon, 2 Jul 03:20 UTCM 2.13 kmFurnas (S. Miguel)
Sat, 30 Jun
Sat, 30 Jun 11:12 UTCM 2.341 kmFossa da Povoacao
Sat, 23 Jun
Sat, 23 Jun 16:11 UTCM 2.03 kmFogo-Congro (S. Miguel)
Tue, 19 Jun
Tue, 19 Jun 06:31 UTCM 1.83 kmFogo-Congro (S. Miguel)
View all recent quakes
Furnas volcano lies at the eastern end of Sao Miguel Island, immediately west of the older Nordeste shield volcano and its Povoaçao caldera.

Background:

Furnas contains at least two calderas, a younger one that is 6-km wide and a larger older one that is less topographically distinct. The eastern wall of the 500-m-deep caldera of Furnas overlaps the western wall of the Povoaçao caldera of Nordeste volcano. Volcanic activity at Furnas dates back about 100,000 years. At least 11 trachytic pumice layers, all erupted during the past 5000 years, post-date the caldera. The most prominent post-caldera feature is the Pico do Gaspar lava dome, east of the Lagoa das Furnas caldera lake. A zone of late-Pleistocene to Holocene basaltic-to-trachytic cinder cones and lava domes is located between Furnas and Agua de Pau volcanoes. Two historical eruptions have occurred at Furnas, one sometime between 1439 and 1443 and the other in 1630. The latter was one of the largest Holocene explosive eruptions in the Azores and caused significant damage and fatalities.
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Source: Smithsonian GVP

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