Mountain type Subglacial volcano | Last eruption 1910 | |
 | ||
Similar Esjufjöll, Gjálp, Vatnafjöll, Loki‑Fögrufjöll, Prestahnúkur | ||
Thordarhyrna (Icelandic: Þórðarhyrna) is one of seven subglacial volcanoes beneath the Vatnajokull glacier Iceland.
Contents
Map of Thordarhyrna, Iceland
Eruptions
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
Geology
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.
References
Thordarhyrna Wikipedia(Text) CC BY-SA