Sete Cidades volcano

stratovolcano, caldera, pyroclastic cones 856 m
Azoren, Portugal, 37.86°N / -25.79°W
Current status: normal or dormant (1 out of 5)
Last update: 22 Aug 2019

Sete Cidades volcano at the western end of Sao Miguel Island contains a 5-km-wide summit caldera, occupied by two caldera lakes, that is one of the scenic highlights of the Azores.

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Typical eruption style: Explosive
Sete Cidades volcano eruptions: 1500 AD

TimeMag. / DepthDistance/Location
Monday, October 11, 2021 10:34 GMT (1 earthquake)
Oct 11, 2021 10:34 am (GMT +0) (Oct 11, 2021 10:34 GMT)
2.6
50 km (31 mi)
North Atlantic Ocean, Portugal
Thursday, October 7, 2021 00:33 GMT (1 earthquake)
Oct 7, 2021 12:33 am (GMT +0) (Oct 7, 2021 00:33 GMT)
2.4
34 km (21 mi)
North Atlantic Ocean, 45 km west of Ponta Delgada, Azoren, Portugal

Background

The steep-walled, 500-m-deep caldera was formed about 22,000 years ago, and at least 22 post-caldera eruptions have occurred. A large group of Pleistocene post-caldera trachytic lava domes, lava flows, and pyroclastic-flow deposits is found on the western-to-northern flanks. A nearly circular ring of six Holocene pyroclastic cones occupies the caldera floor. These have been the source of a dozen trachytic pumice-fall deposits erupted during the past 5000 years. Sete Cidades is one of the most active Azorean volcanoes. Historical eruptions date back to the 15th century and have occurred from within the caldera and from submarine vents off the west coast.
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Source: Smithsonian GVP

Sete Cidades Photos

san_miguel_sete_cidades_g01.jpg (c)
san_miguel_sete_cidades_g01.jpg (c)
 



Sete Cidades volcano tours:
Green Volcanoes (15 days geo and photo tour to the Azores Islands)

See also: Sentinel hub | Landsat 8
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