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Terceira Volcano

Updated: Mar 28, 2024 19:20 GMT -
stratovolcano, caldera, lavadomes 1023 m
Azores (Portugal), 38.74°N / -27.32°W
Current status: normal or dormant (1 out of 5)
Santa Barbara Terceira volcano (image: Eva Kubelková)
Santa Barbara Terceira volcano (image: Eva Kubelková)

Terceira Island contains four stratovolcanoes constructed along a prominent ESE-WNW-trending fissure zone that cuts across the island.

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Typical eruption style: Explosive
Terceira volcano eruptions: holocene

Latest nearby earthquakes

TimeMag. / DepthDistance / Location
Mar 28, 02:30 pm (Azores)
Mar 28, 15:30 GMT
2.9

5.8 km
8.1 km (5 mi) to the NW North Atlantic Ocean, Portugal, 17 km west of Terceira Island, Azores
I FELT IT
Info
Friday, March 22, 2024 GMT (2 quakes)
Mar 22, 05:40 pm (Azores)
Mar 22, 18:40 GMT
3.8

0 km
1.6 km (1 mi) to the NW Azores Islands, Portugal
I FELT IT - 7 reports
Info
Mar 22, 12:15 pm (Azores)
Mar 22, 13:15 GMT
3.2

0.1 km
2.2 km (1.4 mi) to the NW Azores Islands, Portugal
I FELT IT - 2 reports
Info
Friday, March 15, 2024 GMT (1 quake)
Mar 15, 01:11 pm (Azores)
Mar 15, 14:11 GMT
2.9

0.7 km
1.5 km (0.9 mi) to the NE Azores Islands, Portugal Info
Thursday, March 28, 2024 GMT (1 quake)
Mar 28, 07:58 am (Azores)
Mar 28, 08:58 GMT
2.6

3.9 km
3.2 km (2 mi) to the W Azores Islands, Portugal
I FELT IT
Info
Friday, March 22, 2024 GMT (1 quake)
Mar 22, 06:38 pm (Azores)
Mar 22, 19:38 GMT
2.6

4.6 km
3.6 km (2.3 mi) to the NW Azores Islands, Portugal
I FELT IT
Info

Background

Historically active Santa Barbara volcano at the western end of the island is truncated by two calderas. The youngest of these formed about 15,000 years ago. Comenditic lava domes fill and surround the caldera. Pico Alto lies north of the fissure zone in the north-central part of the island and contains a Pleistocene caldera largely filled by lava domes and lava flows. Guilherme Moniz caldera lies along the fissure zone immediately to the south, and 7-km-wide Cinquio Picos caldera at the SE end of the island is the largest in the Azores. Historical eruptions have occurred from Pico Alto, the fissure zone between Pico Alto and Santa Barbara, and from submarine vents west of Santa Barbara. Most Holocene eruptions have produced basaltic-to-rhyolitic lava flows from the fissure zone transecting the island.

Terceira Volcano Photos

Latest satellite images

Terceira satellite image sat1Terceira satellite image sat2

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