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Latest news:

The ongoing earthquake swarm at the Askja caldera in Iceland
Monday, Nov 11, 2019
An swarm of earthquakes is occurring near the Askja caldera, in an area approx. 10 km ENE from the rim and at depths around 5 km. ... [more]
Recent earthquakes under Herdubreid volcano
Monday, Oct 12, 2015
A shallow earthquake swarm has been occurring 25 km NE of the Aksja caldera since Thursday. ... [more]
 

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)
Askja webcams / live data | Reports
Askja volcano books | Tours
Last update: 1 Mar 2020 (earthquake swarm ENE of the caldera)
Typical eruption style: explosive + effusive
Askja volcano eruptions: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961
TimeMag. / DepthDistanceLocation
Fri, 3 Jul 2020
Fri, 3 Jul 04:38 UTCM 0.1 / 6.5 km11 km2.7 km S of Lokatindur (Iceland)
Fri, 3 Jul 04:08 UTCM 0.6 / 8.7 km14 km6.5 km ENE of Lokatindur (Iceland)
Thu, 2 Jul 2020
Thu, 2 Jul 18:05 UTCM 0.7 / 1.1 km3 km9.6 km W of Dreki (Iceland)
Thu, 2 Jul 14:41 UTCM 0.7 / 1.1 km16 km15.9 km SW of Lokatindur (Iceland)
Thu, 2 Jul 11:25 UTCM 1.4 / 7.6 km22 km3.3 km WSW of Herðubreið (Iceland)
View all recent quakes
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.

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

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