Thordarhyrna

Thordarhyrna
Thordarhyrna
Highest point
Listing List of volcanoes in Iceland
Coordinates 64°12′4″N 17°0′17″W / 64.20111°N 17.00472°W / 64.20111; -17.00472Coordinates: 64°12′4″N 17°0′17″W / 64.20111°N 17.00472°W / 64.20111; -17.00472
Geology
Mountain type Subglacial volcano
Last eruption 1910

Þórðarhyrna (also known as Thordarhyrna) is one of seven[1] subglacial volcanoes beneath the Vatnajokull glacier Iceland.

Eruptions

It last erupted in 1910 and prior to that in 1903.[2] [3]

An eruption in 3550 BC +/- 500 years poured out 150,000,000 cubic meters of lava in the area Bergvatnsarhraun south of Thordarhyrna.[4]

While an eruption 1887 to 1889 eruption had a (VEI): 2 [5]

Geology

There is a mechanical interaction between Thordarhyrna and Grimsvötn, despite these volcanoes being comparatively far apart [6] so the eruption from 1902 - 1904 was combined with an eruption from Grimsvötn and had a Volcanic Explosivity Index (VEI): 4 [7]

A fault runs (N.35°W) from Thordarhyrna towards Hamarinn, and separates two, markedly-different, tectonic regimes.[8]

See also

List of volcanoes in Iceland

References

  1. ↑ Figure 2.8 shows 7 volcanoes beneath the glacier
  2. ↑ Eruptions in Iceland since 1900
  3. ↑
  4. ↑
  5. ↑
  6. ↑
  7. ↑
  8. ↑ Surface and bedrock topography mapped by radio echo sounding
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