Thordarhyrna
| Thordarhyrna | |
|---|---|
 Thordarhyrna
|
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| Highest point | |
| Listing | List of volcanoes in Iceland |
| Coordinates | 64°12′4″N 17°0′17″W / 64.20111°N 17.00472°WCoordinates: 64°12′4″N 17°0′17″W / 64.20111°N 17.00472°W |
| Geology | |
| Mountain type | Subglacial volcano |
| Last eruption | 1910 |
Thordarhyrna (Icelandic: Þórðarhyrna) is one of sevensubglacial volcanoes beneath the Vatnajokull glacier Iceland.
It last erupted in 1910 and prior to that in 1903.
An eruption in 3550 BC +/- 500 years poured out 150,000,000 cubic meters of lava in the area Bergvatnsarhraun to the south of Thordarhyrna.
An eruption 1887 to 1889 eruption had a (VEI) of 2
There is a mechanical interaction between Thordarhyrna and Grimsvötn, despite these volcanoes being relatively far apart, so the eruption in 1902 - 1904 was combined with an eruption from Grimsvötn and had a Volcanic Explosivity Index (VEI) of 4
A fault runs (N.35°W) from Thordarhyrna towards Hamarinn, and separates two different tectonic regions.
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Wikipedia