Heiðarsporðar Volcano

Updated: May 18, 2024 22:31 GMT - refresh

fissure vent 490 m / 1608 ft
Iceland, 65.58°N / -16.82°W
Current status: normal or dormant (1 out of 5)

Heidarspordar volcano in the Northern Volcanic Zone is a young system of eruptive fissures, about 22 km long. It formed near the Krafla and Fremrinámar fissure systems and is still in its embryonic stage, characterized by large-volume eruptions, last about 2200 years ago.

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News/Updates | Earthquakes

Typical eruption style: effusive
Heiðarsporðar volcano eruptions: around 300 BC

Latest nearby earthquakes

Time	Mag. / Depth	Distance / Location
May 15, 10:39 pm (Reykjavik)	0.4 2.5 km		1.2 km S of Kröfluvirkjun	Info
Monday, May 13, 2024 GMT (1 quake)
May 13, 06:20 am (Reykjavik)	0.3 5.9 km		Iceland: 10.2 km SW of Kröfluvirkjun	Info
Saturday, May 11, 2024 GMT (2 quakes)
May 11, 10:49 pm (Reykjavik)	0.4 5.1 km		Iceland: 2.4 km WSW of Kröfluvirkjun	Info
May 11, 10:49 pm (Reykjavik)	1.6 4.1 km	13 km (8.2 mi) to the N	Iceland: 1.5 km SSW of Kröfluvirkjun	Info
Friday, May 10, 2024 GMT (1 quake)
May 10, 11:41 pm (Reykjavik)	0.3 9.3 km		Iceland: 13.7 km NNW of Herðubreiðarfjöll	Info
Thursday, May 9, 2024 GMT (1 quake)
May 9, 10:38 am (Reykjavik)	0.9 2.2 km		1.3 km S of Kröfluvirkjun	Info

View recent quakes

Background

The Heidarspordar volcanic system in the Northern Volcanic Zone is about 22 km long, consisting of a fissure swarm and a central volcano defined by high eruptive activity and silicic rocks.
It is embryonic, starting to develop in the marginal area of two adjacent fissure areas, Krafla and Fremrinámar, producing large-volume eruptions. No geothermal activity is present. Magma composition ranges from olivine-tholeiite through tholeiitic basalt and basaltic andesite to dacite. Characteristic activity consists of effusive basaltic eruptions and small predominantly effusive silicic eruptions. It has shown rather low activity in the Holocene but has produced substantial basaltic lava flows. Two eruptive periods have occurred in Holocene time separated by over 8,000 years. The last eruption took place about 2,200 years ago, producing a lava flow covering about 220 km2 and extending 60 km from source.
Source: GVP