Torfajökull volcano

Updated: Jul 6, 2022 12:02 GMT - Refresh
Stratovolcano 1259 m / 4,131 ft
Iceland, 63.93°N / -19.18°W
Current status: normal or dormant (1 out of 5)
Last update: 12 Mar 2022 (earthquake swarm)

The Torfajökull central volcano, located north of Myrdalsjökull and south of Thorisvatn lake, is cut by a 12-km-wide caldera that formed during the Pleistocene.

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Typical eruption style:

Effusive and explosive.


Torfajökull volcano eruptions: ca. 900 AD, 1170(?), 1477
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Saturday, July 2, 2022 GMT (1 quake)
Jul 2, 2022 11:45 pm (GMT +0) (Jul 2, 2022 23:45 GMT)
2.6

0.1 km
31 km (19 mi)
Iceland: 8.3 Km N of Hábunga
Friday, July 1, 2022 GMT (1 quake)
Jul 1, 2022 11:03 pm (GMT +0) (Jul 1, 2022 23:03 GMT)
2.4

4.4 km
33 km (21 mi)
Iceland: 2.2 Km W of Goðabunga
Monday, June 27, 2022 GMT (1 quake)
Jun 27, 2022 6:44 am (GMT +0) (Jun 27, 2022 06:44 GMT)
2.5

0.1 km
34 km (21 mi)
Iceland: 6.2 Km N of Hábunga
Saturday, June 25, 2022 GMT (1 quake)
Jun 25, 2022 9:07 am (GMT +0) (Jun 25, 2022 09:07 GMT)
2.4

0.1 km
32 km (20 mi)
Iceland: 7.5 Km N of Hábunga

Background

Torjajokull consists of the largest area of silicic and intermediate volcanism in Iceland; about 225 cu km of silicic extrusive rocks are exposed. The dominantly rhyolitic complex rises about 500 m above surrounding basaltic plains and is elongated in a WNW-ESE direction. Most rhyolitic lava flows were erupted subglacially, forming silicic hyaloclastites that form ridge and dome-shaped breccias.

During postglacial times only a narrow fissure zone at the western end has been active, producing mostly silicic lava flows, lava domes, and tephras. The most recent silicic eruption produced the Hrafntinnuhraun lava flow about 900 AD. The fissure system is along trend with and was active at the same time as the basaltic Veidivötn fissure system of Bárdarbunga central volcano in 1477 AD. The small Torfajökull icecap lies mostly outside the SE rim of the caldera, which is the site of vigorous thermal activity over a broad area of 130-140 sq km.

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Source: GVP, Smithsonian Institute


See also: Sentinel hub | Landsat 8 | NASA FIRMS

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