Thordarhyrna

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

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

Contents

Eruptions

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

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. ^ [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