Tjörnes Fracture Zone

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 66.3°N
  • 17.1°W

  • Unknown
     

  • 373100
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Tjörnes Fracture Zone.

The Global Volcanism Program has no Weekly Reports available for Tjörnes Fracture Zone.

The Global Volcanism Program has no Bulletin Reports available for Tjörnes Fracture Zone.

The offshore Tjörnes Fracture Zone is an oblique transform zone that separates the northern volcanic zone of Iceland from the Kolbeinsey Ridge, part of the Mid-Atlantic Ridge north of Iceland. A submarine eruption was reported during 1867-1868 at the SE part of the fissure system off the northern coast of Iceland along the Manareyjar Ridge immediately north of Manareyjar Island.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1867 Dec 1868 Jan Confirmed   Historical Observations Immediately north of Manareyjar Island

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.



Synonyms
Manareyjar Ridge


Craters
Feature Name Feature Type Elevation Latitude Longitude
Manareyjar Submarine crater

The Global Volcanism Program has no photographs available for Tjörnes Fracture Zone.

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Riedel C, Petersen T, Theilen F, Neben S, 2003. High b-values in the leaky segment of the Tjornes Fracture Zone north of Iceland: are they evidence for shallow magmatic heat sources?. J Volc Geotherm Res, 128: 15-29.

Saemundsson K, 1974. Evolution of the axial rifting zone in northern Iceland and the Tjornes Fracture Zone. Geol Soc Amer Bull, 85: 495-504.

Sapper K, 1917. Katalog der Geschichtlichen Vulkanausbruche. Strasbourg: Karl J Trubner, 358 p.

Steinthorsson S, et al., 2002. Catalog of Active Volcanoes of the World - Iceland. Unpublished manuscript.

Thorarinsson S, 1965. Submarine eruptions near Iceland. Natturufraedingurinn, 35: 49-74 (in Icelandic with English summary).

Volcano Types

Submarine

Tectonic Setting

Rift zone
Oceanic crust (< 15 km)

Rock Types

Major
Basalt / Picro-Basalt

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
0
0
807
22,407

Affiliated Databases

Large Eruptions of Tjörnes Fracture Zone Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.