Thordarhyrna

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Thordarhyrna
Thordarhyrna is located in Iceland
Thordarhyrna
Thordarhyrna
Highest point
ListingList of volcanoes in Iceland
Coordinates64°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 typeSubglacial volcano
Last eruption1910

Thordarhyrna[pronunciation?] (Icelandic: Þórðarhyrna) is one of seven[1] subglacial volcanoes beneath the Vatnajokull glacier Iceland.

Eruptions[edit]

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 to the south of Thordarhyrna.[4]

An eruption between 1887 and 1889 had a VEI of 2.[5]

Geology[edit]

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

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

See also[edit]

References[edit]

  1. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2012-03-09. Retrieved 2011-05-24. Figure 2.8 shows 7 volcanoes beneath the glacier
  2. ^ "Archived copy". Archived from the original on 2012-12-21. Retrieved 2011-05-24. Eruptions in Iceland since 1900
  3. ^ "Archived copy". Archived from the original on 2011-05-27. Retrieved 2011-05-27.
  4. ^ [1]
  5. ^ [2]
  6. ^ [3]
  7. ^ [4]
  8. ^ [5] Surface and bedrock topography mapped by radio echo sounding