Askja volcano

Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Current status: normal or dormant (1 out of 5)
Last update: 1 Mar 2020 (earthquake swarm ENE of the caldera)

Askja is a large basaltic central volcano that forms the Dyngjufjöll massif. It is truncated by three overlapping calderas, the largest of which is 8 km wide and may have been produced primarily from subglacial ring-fracture eruptions rather than by subsidence.

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Typical eruption style: explosivo efusiva
Erupciones del volcán Askja: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961

Latest nearby earthquakes

Fecha / HoraRevista / ProfundidadDistanciaUbicación
Fri, 14 May 2021 (GMT) (1 terremoto)
14 May 2021 07:45:07 GMT
0.6

5.2 km - Más
km2.7 Km N of Herðubreið, Iceland
Thu, 13 May 2021 (GMT) (4 temblores)
13 May 2021 23:42:05 GMT
0.1

3.6 km - Más
km3.7 Km WSW of Dreki, Iceland
13 May 2021 11:34:02 GMT
0.1

1.1 km - Más
km17.6 Km S of Kistufell, Iceland
13 May 2021 11:32:42 GMT
0.1

1.1 km - Más
km15.0 Km S of Kistufell, Iceland
13 May 2021 10:35:36 GMT
1.2

0.6 km - Más
km11.6 Km N of Lokatindur, Iceland

Background

A major rhyolitic explosive eruption from Dyngjufjöll about 10,000 years ago was in part associated with the formation of Askja caldera. Many postglacial eruptions also occurred along the ring-fracture. A major explosive eruption on the SE caldera margin in 1875 was one of Iceland's largest during historical time. It resulted in the formation of a smaller 4.5-km-wide caldera, now filled by Öskjuvatn lake, that truncates the rim of the larger central caldera. The 100-km-long Askja fissure swarm, which includes the Sveinagja graben, is also related to the Askja volcanic system, as are several small shield volcanoes such as Kollatadyngja. Twentieth-century eruptions at Askja have produced lava flows from vents located mostly near Öskjuvatn lake.

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Source: GVP, Smithsonian Institution


See also: Sentinel hub | Landsat 8
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