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Þeistareykir

Photo of this volcano
  • Iceland
  • Iceland Neovolcanic Rift Zone
  • Shield | Shield
  • 900 BCE
  • Country
  • Volcanic Province
  • Landform | Volc Type
  • Last Known Eruption
  • 65.883°N
  • 16.967°W

  • 563 m
    1847 ft

  • 373090
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports available for Þeistareykir.

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

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

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 confirmed Holocene eruptive periods.

0900 BCE ± 100 years Confirmed Eruption Max VEI: 0

Episode 1 | Eruption Episode Storihver (Theistareykjahraun)
0900 BCE ± 100 years - Unknown Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Storihver (Theistareykjahraun)

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Lava flow
0900 BCE ± 100 years    - - - - VEI (Explosivity Index)

6800 BCE (?) Confirmed Eruption Max VEI: 0

Episode 1 | Eruption Episode Borgarhraun and other flows
6800 BCE (?) - Unknown Evidence from Correlation: Tephrochronology

List of 2 Events for Episode 1 at Borgarhraun and other flows

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Lava flow
6800 BCE
(?)
   - - - - VEI (Explosivity Index)

9500 BCE (?) Confirmed Eruption Max VEI: 0

Episode 1 | Eruption Episode Theistareykjabunga shield volcano
9500 BCE (?) - Unknown Evidence from Correlation: Tephrochronology

List of 4 Events for Episode 1 at Theistareykjabunga shield volcano

Start Date End Date Event Type Event Remarks
   - - - -    - - - - Lava fountains
   - - - -    - - - - Lava flow
   - - - -    - - - - Lava lake
9500 BCE
(?)
   - - - - VEI (Explosivity Index)
Deformation History

There is data available for 1 deformation periods. Expand each entry for additional details.


Deformation during 2005 - 2009 [Uplift; Observed by GPS, InSAR]

Start Date: 2005 Stop Date: 2009 Direction: Uplift Method: GPS, InSAR
Magnitude: 3.000 cm Spatial Extent: Unknown Latitude: Unknown Longitude: Unknown

Remarks: InSAR analysis from 2005-2009 shows inflation at Theistareykir central volcano with a maximum deformation rate between 2007 and 2008.

Figure (see Caption)

Unwrapped ENVISAT interferograms spanning 2007?2008, with the deformation normalized to 1 yr (A/D), Mogi model prediction with the Mogi source M indicated (B/E), and residuals between the data and the model predictions (C/F) for ascending (A?C) and descending track (D?F). The dashed lines mark the model segments of the plate-boundary and the arrows indicate the line-of-sight (LOS) from the ground towards the satellite.

From: Metzger et al. 2011.


Reference List: Metzger et al. 2011.

Full References:

Metzger, S., Jónsson, S. and Geirsson, H., 2011. Locking depth and slip-rate of the Húsavík Flatey fault, North Iceland, derived from continuous GPS data 2006-2010. Geophysical Journal International, 187: 564-576. https://doi.org/10.1111/j.1365-246X.2011.05176.x

Emission History

There is no Emissions History data available for Þeistareykir.

GVP Map Holdings

Maps are not currently available due to technical issues.

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.

Smithsonian Sample Collections Database

There are no samples for Þeistareykir in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites