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Description

Abstracted geological map of geological features North volcanic zone of Iceland for use in articles including Askja, Krafla, Fremrinámur, Theistareykjarbunga and other articles such as 1996 eruption of Gjálp, Grímsvötn, Bárðarbunga, Loki-Fögrufjöll, Tungnafellsjökull and Kverkfjöll.

Source

The data and its representation is original as it transpired no one source appeared to have full consistency. It has been checked against other mapping representations/abstractions. Mappings from Hjartardóttir et. al. over the years are often the most detailed and show overlap, as is the case with Bárðarbunga and Fremrinámur which have been resolved differently by that group of authors over time and by other different groups. Such inconsistencies with regard to clear boundaries is perhaps better understood now we have a definite history of dyke extension of more than 40 km from Bárðarbunga's central volcano, but this was not known till 2015. The convention of some authors that central volcanoes and their fissure swarms should align is not followed by Hjartardóttir et. al., but is usually followed here. This reflects the possibly artificial convention that volcanoes do not overlap and what ever my own thoughts on the matter is followed here due to standard reference work and classification practice. Please refer to original sources for their mapping and consider improving this mapping if better evidence becomes available:

  • Óskarsson, Birgir V.; Riishuus, M.S; Erlendsson, Ögmundur; Askew, Robert A.; Hjartarson, Árni; Sigurgeirsson, Magnús Á.; Brynjólfsson, Skafti; Jakobsson, Sveinn P. (2022). "Jarðfræði af jarðfræðikortum ÍSOR (1:100.000 Geology Maps of Iceland series)". www.ni.is (in Icelandic). Iceland: ÍSOR, Icelandic Institute of Natural History. Retrieved 4 May 2024.
  • Hjartardóttir, Á.R.; Einarsson, P.; Magnúsdóttir, S; Björnsdóttir, Þ.; Brandsdóttir, B. (2016). "Fracture systems of the Northern Volcanic Rift Zone, Iceland: an onshore part of the Mid-Atlantic plate boundary". Geological Society, London, Special Publications. 420 (1): 297–314. Bibcode:2016GSLSP.420..297H. doi:10.1144/SP420.1.
  • Islam, M.T.; Sturkell, E.; LaFemina, P.; Geirsson, H.; Sigmundsson, F.; Ólafsson, H. (2016). "Continuous subsidence in the Thingvellir rift graben, Iceland: Geodetic observations since 1967 compared to rheological models of plate spreading". Journal Geophysical Research. Solid Earth. 121: 321–338. doi:10.1002/2015JB012306.: Fig. 1. 
  • Thordarson, T.; Hoskuldsson, A. (2008). "Postglacial Volcanism in Iceland" (PDF). Jökull. 58: 197–228. Retrieved 4 March 2024.
  • Thordarson, Thor; Hartley, Margaret (2021). "Catalogue of Icelandic Volcanoes:Askja Alternative name: Askja-Dyngjufjöll, Askja-Hrúthálsar". Retrieved 6 April 2024.
  • Grönvold, Karl; Sæmundsson, Kristján (2019). "Catalogue of Icelandic Volcanoes:Þeistareykir e: Theistareykir". Retrieved 6 April 2024.
  • Sæmundsson, Kristján (2019). "Catalogue of Icelandic Volcanoes:Krafla". Retrieved 6 April 2024.
  • Sæmundsson, Kristján (2019). "Catalogue of Icelandic Volcanoes:Heiðarsporðar Alternative name: Heiðarsporður". Retrieved 6 April 2024.
  • Sæmundsson, Kristján (2019). "Catalogue of Icelandic Volcanoes:Fremrinámar Alternative name: Fremrinámur". Retrieved 6 April 2024.
  • Hjartardóttir, Á.R.; Einarsson, P.; Sigurdsson, H. (2009). "The fissure swarm of the Askja volcanic system along the divergent plate boundary of N Iceland". Bulletin of Volcanology. 71: 961–975. doi:10.1007/s00445-009-0282-x.
  • Hjartardóttir, Á.R.; Einarsson, P. (2012). "The Kverkfjöll fissure swarm and the eastern boundary of the Northern Volcanic Rift Zone, Iceland". Bulletin of Volcanology. 74: 143–162. doi:10.1007/s00445-011-0496-6.
  • Hjartardóttir, Á.R.; Einarsson, P.; Bramham, E.; Wright, T.J. (2012). "The Krafla fissure swarm, Iceland, and its formation by rifting events". Bulletin of Volcanology. 4: 2139–2153. doi:10.1007/s00445-012-0659-0.
  • Hjartardóttir, Ásta Rut (2013). Fissure swarms of the Northern Volcanic Rift Zone, Iceland. PhD Dissertation (Thesis). Faculty of Earth Sciences, University of Iceland.
Date

2024-03-25

Author

User:ChaseKiwi

Permission
(Reusing this file)

See below.

Additional information The data has switching logic. It is no longer a pure json file. Json to be added is best debugged else where. The map is complimentary to data files Wikipedia:Map data/Grímsvötn, Wikipedia:Map data/Öræfi volcanic belt, Wikipedia:Map data/Hofsjökull, Wikipedia:Map data/Katla, Wikipedia:Map data/Hengill, Wikipedia:Map data/Snæfellsnes volcanic belt and an intended data file Wikipedia:Map data/Vatnajökull which may abstract out glacial data. Other shading shows:    calderas,   central volcanoes and   fissure swarms,   subglacial terrain above 1,100 m (3,600 ft), and   seismically active areas. Clicking on the image enlarges to full window and enables mouse-over with more detail..

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