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Prestahnúkur

Photo of this volcano
  • Iceland
  • Iceland and Arctic Ocean
  • Subglacial
  • 3350 BCE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 64.583°N
  • 20.666°W

  • 1385 m
    4544 ft

  • 371070
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Prestahnúkur.

The Global Volcanism Program has no Weekly Reports available for Prestahnúkur.

The Global Volcanism Program has no Bulletin Reports available for Prestahnúkur.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

There is data available for 3 Holocene eruptive periods.

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
3350 BCE (?) Unknown Confirmed 0 Tephrochronology Sköflungur
6950 BCE (?) Unknown Confirmed 0 Radiocarbon (corrected) Geitlandshraun II
7550 BCE ± 500 years Unknown Confirmed 0 Radiocarbon (uncorrected) Skjaldbreidur
Deformation History

There is no Deformation History data available for Prestahnúkur.

Emission History

There is no Emissions History data available for Prestahnúkur.

Photo Gallery

The massive subglacial Prestahnukur volcano at the SW end of the Langjökull icecap has associated rift zones to the north and SW that have erupted during the Holocene. The classic Icelandic shield volcano Skjaldbreidur (seen in this photo) was formed at the southern end of the Prestahnukur volcanic system, between Thorsjökull glacier and Thingvallavatn lake. The broad, low-angle shield volcano produced 17 cu km of basaltic lava flows during the early Holocene. Hot springs are associated with the rhyolitic Prestahnukur central volcano.

Photo by Ingibjörg Kaldal (Orkustofunun, courtesy of Richie Williams, U.S. Geological Survey).
See title for photo information.
The classic Icelandic volcano Skjaldbreidur is perhaps the best known of the many small shield volcanoes that were constructed along rift zones where the Mid-Atlantic Ridge rises above sea level. Skjaldbreidur, seen here from the west along route 52, was formed about 9500 years ago during a single long-duration eruption at the southern end of the Prestahnukur volcanic system in central Iceland. The broad, low-angle shield volcano produced 17 cu km of basaltic lava flows and is capped by a small 300-m-wide summit crater.

Photo by Richie Williams, 1981 (U.S. Geological Survey).
See title for photo information.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.


Title: Rangarvellir
Publisher: DMA
Country: Iceland
Year: 1989
Series: C761
Map Type: Topographic
Scale: 1:50,000
Map of Rangarvellir

Title: Midsudurland
Publisher: Geodetic Institute, Landmaelingar Islands
Country: Iceland
Year: 1988
Map Type: Topographic
Scale: 1:250,000
Map of Midsudurland

Title: Geomorphology of Iceland
Publisher: University of Goteborg, Dept Phys Geog
Country: Iceland
Year: 1984
Map Type: Geology (Geomorphology)
Scale: 1:1,750
Map of Geomorphology of Iceland

Title: Geographical Names of Iceland
Publisher: University of Goteborg, Dept Phys Geog
Country: Iceland
Year: 1984
Map Type: Unknown
Scale: 1:1,750
Map of Geographical Names of Iceland

Title: Marteinstunga
Publisher: US Army Map Service
Country: Iceland
Year: 1950
Series: C762
Map Type: Topographic
Scale: 1:50,000
Map of Marteinstunga

Title: Storinupur
Publisher: US Army Map Service
Country: Iceland
Year: 1950
Series: C762
Map Type: Topographic
Scale: 1:50,000
Map of Storinupur
Smithsonian Sample Collections Database

The following 6 samples associated with this volcano can be found in the Smithsonian's NMNH Department of Mineral Sciences collections, and may be availble for research (contact the Rock and Ore Collections Manager). Catalog number links will open a window with more information.

Catalog Number Sample Description Lava Source Collection Date
NMNH 115615 Tholeiite GRINDAVIK --
NMNH 117449-11 Perlite -- --
NMNH 117449-15 Perlite -- --
NMNH 117449-16 Obsidian -- --
NMNH 117449-17 Perlite -- --
NMNH 117449-18 Obsidian -- --
External Sites