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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Askja
Askja is a central volcano made up of the Dyngjufjöll massif and at least three calderas, the largest of which is 8 km wide. This view from the SE looks across Öskjuvatn lake within the youngest caldera that formed in 1875 during Askja's largest historical eruption. It truncates a larger caldera, whose wall is seen in the distance above the lava-covered caldera floor. The 100-km-long Askja fissure swarm, which includes the Sveinagjá graben, is also related to the Askja volcanic system. Photo by Michael Ryan, 1984 (U.S. Geological Survey).
Volcano Number:
373060
Volcano Name:
Askja
Country:
Iceland
Volcano Type:
Stratovolcano
Last Eruption:
1961 CE
Elevation:
1080m
Tectonic Setting:
Rift zone / Oceanic crust (< 15 km)
Pop. within 100km:
13028
Latitude:
65.033
Longitude:
-16.783
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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. 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 have produced lava flows from vents located mostly near Öskjuvatn lake.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.
Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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