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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 63.92°N
  • 21.83°W

  • 621 m
    2037 ft

  • 371040
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Brennisteinsfjöll.

 Available Weekly Reports

There are no Weekly Reports available for Brennisteinsfjöll.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1341 ± 1 years Unknown Confirmed 2 Historical Observations Grafeldur (Selvogshraun)
1200 (?) Unknown Confirmed 2 Tephrochronology Kongsfell
1000 Jun 25 ± 4 days Unknown Confirmed 0 Historical Observations Eldborg at Lambafell
0950 (?) Unknown Confirmed 2 Radiocarbon (uncorrected) Rjupnadyngjur
0910 ± 75 years Unknown Confirmed 2 Radiocarbon (uncorrected) Kista (Breiddalshraun)
0875 ± 50 years Unknown Confirmed 2 Radiocarbon (uncorrected) Tvibollar
1040 BCE ± 75 years Unknown Confirmed 2 Radiocarbon (uncorrected) Eldborg at Brennisteinsfjöllum
2660 BCE ± 75 years Unknown Confirmed 0 Radiocarbon (uncorrected) Leitin
9000 BCE (?) Unknown Confirmed 0 Tephrochronology Heidin Há

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. 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. Additional discussion of data sources can be found under Volcano Data Criteria.

Einarsson T, 1960. The geology of Hellisheidi. Natturufraedingurinn, 30: 151-175 (in Icelandic).

Gudmundsson A T, 1986b. Iceland-Fires. Reykjavik: Vaka-Helgafell, 168 p.

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

Jakobsson S P, Jonsson J, Shido F, 1978. Petrology of the western Reykjanes Peninsula, Iceland. J Petr, 19: 669-705.

Johannesson H, Saemundsson K, 1998. Geological map of Iceland, 1:500,000. Tectonics. Icelandic Inst Nat Hist, Reykjavik.

Jonsson J, 1972. Eldborgir undir Geitahlid. Natturufraedingurinn, 42: 59-66 (in Icelandic).

Jonsson J, 1974. Obrinnisholar. Natturufraedingurinn, 44: 109-119 (in Icelandic).

Jonsson J, 1977b. Tvi-Bollar and Tvibollahraun. Natturufraedingurinn, 47: 103-109 (in Icelandic).

Jonsson J, 1978. Geology of the Reykjanes Peninsula. Orkustofnun Jardhitadeild, OS-JHD-7831, Geol maps and 303 p text (in Icelandic).

Jonsson J, 1983. Volcanic eruptions in historical time on the Reykjanes Peninsula, southwest Iceland. Natturufraedingurinn, 52: 127-139 (in Icelandic with English summary).

Saemundsson K, Einarsson S, 1980. Geological map of Iceland, sheet 3, south-west Iceland. Icelandic Museum Nat Hist & Iceland Geodetic Surv, 1:250,000 geol map.

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

Thordarson T, Hoskuldsson A, 2008. Postglacial eruptions in Iceland. Jokull, 58: 197-228.

The Brennisteinsfjöll volcanic system, located east of Kleifarvatn lake, consists of a series of NE-SW-trending crater rows and small shield volcanoes. Postglacial and historical basaltic lavas cover a wide area. An eruption in 1000 CE was dated by its occurrence at the time of a meeting of the Icelandic outdoor parliament at Thingvellier. The most recent eruption took place in the 14th century.