Heiðarsporðar volcano

Updated: Aug 16, 2022 03:54 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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Typical eruption style: effusive
Heiðarsporðar volcano eruptions: around 300 BC
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Monday, August 15, 2022 GMT (1 quake)
Aug 15, 2022 5:52 am (GMT +0) (Aug 15, 2022 05:52 GMT)
1.7

4.3 km
32 km (20 mi)
Iceland: 1.7 Km SW of Þeistareykir
Friday, August 12, 2022 GMT (1 quake)
Aug 12, 2022 12:59 pm (GMT +0) (Aug 12, 2022 12:59 GMT)
0.7

1.4 km
13 km (8.1 mi)
Iceland: 1.3 Km S of Kröfluvirkjun
Friday, August 5, 2022 GMT (1 quake)
Aug 5, 2022 9:00 am (GMT +0) (Aug 5, 2022 09:00 GMT)
0.9

5.6 km
7.4 km (4.6 mi)
Iceland: 9.3 Km SW of Kröfluvirkjun
Thursday, August 4, 2022 GMT (1 quake)
Aug 4, 2022 4:55 pm (GMT +0) (Aug 4, 2022 16:55 GMT)
0.9

8.6 km
27 km (17 mi)
Iceland: 6.7 Km WNW of Herðubreiðarfjöll

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


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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