Heiðarsporðar volcano
fissure vent 490 m / 1608 ft
Iceland, 65.58°N / -16.82°W
Current status: normal or dormant (1 out of 5)
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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Heiðarsporðar volcano eruptions: around 300 BC
Latest nearby earthquakes
| Time | Mag. / Depth | Distance/Location | ||
| Fri, 30 Jul 2021 (GMT) (3 earthquakes) | ||||
| 30 Jul 2021 23:55:53 GMT | 1.1 1.1 km | 34 km (21 mi) Iceland: 28.5 Km SW of Þeistareykir | ||
| 30 Jul 2021 04:08:22 GMT | 0.3 2.9 km | 17 km (10.6 mi) Iceland: 3.1 Km NNW of Kröfluvirkjun | ||
| 30 Jul 2021 00:14:04 GMT | 0.4 4.2 km | 32 km (20 mi) Iceland: 1.9 Km SW of Þeistareykir | ||
| Wed, 28 Jul 2021 (GMT) (2 earthquakes) | ||||
| 28 Jul 2021 20:06:37 GMT | 0.5 9.8 km | 50 km (31 mi) Iceland: 2.2 Km NE of Herðubreið | ||
| 28 Jul 2021 19:26:27 GMT | 0.5 9.8 km | 49 km (30 mi) Iceland: 2.5 Km NE of Herðubreið | ||
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
