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Vatnafjöll

FieldValue
nameVatnafjöll
elevation_m1235
locationIceland
mapIceland
coordinates
typeFissure vents of Hekla
ageTephrochronology
last_eruption1200 years ago

Vatnafjöll () is a 40 km long, 9 km wide basaltic fissure vent system that is south-east of Hekla, Iceland. It includes from the north towards the south the hills of Innri-Vatnafjöll at 1089 m high, Fremri-Vatnafjöll at 901 m and Vatnafjallarani at 574 m as the main Vatnafjöll edifice, at a distance of about 7 km from Hekla. It is part of the same system as Hekla, and the term Hekla-Vatnafjöll volcanic system has been used to describe it. More than two dozen eruptions have occurred at Vatnafjöll during the Holocene Epoch. Vatnafjöll has not erupted during the last 1100 years. While these eruptions were predominantly effusive some basaltic tephra deposits have been found up to 40 - away.

A with an epicenter near the main Vatnafjöll edifice occurred on 25th May, 1987, where the transform South Iceland seismic zone meets the East volcanic zone of Iceland. Later analysis has suggested that initiation was from strain relief but a subsurface dyke intrusion then occurred over the next 3 days.

References

category:Earthquakes in Iceland

References

  1. "National Land Survey of Iceland (Kortasja)".
  2. (1999). "Strain changes for the 1987 Vatnafjöll earthquake in south Iceland and possible magmatic triggering". Journal of Geophysical Research: Solid Earth.
  3. {{cite gvp
  4. "Catalogue of Icelandic Volcanoes:Catalogue of Icelandic Volcanoes:Hekla".
  5. (1991). "Source mechanism of the 1987 Vatnafjöll earthquake in South Iceland". Journal of Geophysical Research: Solid Earth.
  6. "Catalogue of Icelandic Volcanoes:Catalogue of Icelandic Volcanoes:Hekla".
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active-volcanoes east-volcanic-zone-of-iceland fissure-vents hekla volcanoes-of-iceland
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