Thordarhyrna

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

Thordarhyrna
Thordarhyrna is located in Iceland
Thordarhyrna
Thordarhyrna
Listing List of volcanoes in Iceland
Location
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
Type Volcano
Last eruption 1910

Eruptions[edit]

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

An eruption in 3550 BC +/- 500 years poured out 1,500,000,000 cubic meters of lava [4] in the area south of Thordarhyrna (Bergvatnsarhraun.

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

Geology[edit]

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[edit]

List of volcanoes in Iceland

References[edit]

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