Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes
Kerlingarfjöll central volcano is Iceland’s second largest outcrop of Quaternary rhyolite and is part of the Icelandic Western Rift Zone. Geochemical and Ar/Ar age data show that at least 21 different rhyolite eruptions have taken place at Kerlingarfjöll over the last 350 ka. Ar/Ar dating was carrie...
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ftopenunivgb:oai:oro.open.ac.uk:20943 2023-06-11T04:13:06+02:00 Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes Flude, Stephanie McGarvie, David W. Burgess, Ray Tindle, Andrew G. 2010 application/pdf https://oro.open.ac.uk/20943/ https://oro.open.ac.uk/20943/1/Flude_2010_proof.pdf https://doi.org/10.1007/s00445-010-0344-0 unknown https://oro.open.ac.uk/20943/1/Flude_2010_proof.pdf Flude, Stephanie <http://oro.open.ac.uk/view/person/sf4764.html>; McGarvie, David W. <http://oro.open.ac.uk/view/person/dwm4.html>; Burgess, Ray and Tindle, Andrew G. <http://oro.open.ac.uk/view/person/agt2.html> (2010). Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes. Bulletin of Volcanology, 72(5) pp. 523–528. Journal Item OU Users Only PeerReviewed 2010 ftopenunivgb https://doi.org/10.1007/s00445-010-0344-0 2023-05-28T05:43:19Z Kerlingarfjöll central volcano is Iceland’s second largest outcrop of Quaternary rhyolite and is part of the Icelandic Western Rift Zone. Geochemical and Ar/Ar age data show that at least 21 different rhyolite eruptions have taken place at Kerlingarfjöll over the last 350 ka. Ar/Ar dating was carried out on samples of obsidian which showed variable reproducibility, illustrating the difficulty in dating young Icelandic volcanics. Nevertheless, reasonable estimates of eruption age have been derived for a number of eruptive units that are consistent with observed stratigraphy, enabling an understanding of the temporal evolution of Kerlingarfjöll. Two rhyolite magma types are present. The first is an older, low-Nb rhyolite that was erupted episodically along a cryptic curved fracture system, to form a discontinuous ring of rhyolite mountains, between 350 and 250 ka. This discontinuous ring is similar to structures observed at other volcanoes in Iceland, suggesting that the development of a curved fracture that acts as a pathway for episodic silicic eruptions is a feature of central volcano development. The second magma is a younger, high-Nb rhyolite that was erupted episodically between 250 and 68 ka in the northern part of Kerlingarfjöll, forming two clusters, both of which have areas of intense hydrothermal activity. Repose periods for rhyolite volcanism are thought to be on the order of tens of thousands of years, and it is possible that Kerlingarfjöll will erupt rhyolite again in the future. Article in Journal/Newspaper Iceland The Open University: Open Research Online (ORO) Bulletin of Volcanology 72 5 523 538 |
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Open Polar |
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The Open University: Open Research Online (ORO) |
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ftopenunivgb |
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Kerlingarfjöll central volcano is Iceland’s second largest outcrop of Quaternary rhyolite and is part of the Icelandic Western Rift Zone. Geochemical and Ar/Ar age data show that at least 21 different rhyolite eruptions have taken place at Kerlingarfjöll over the last 350 ka. Ar/Ar dating was carried out on samples of obsidian which showed variable reproducibility, illustrating the difficulty in dating young Icelandic volcanics. Nevertheless, reasonable estimates of eruption age have been derived for a number of eruptive units that are consistent with observed stratigraphy, enabling an understanding of the temporal evolution of Kerlingarfjöll. Two rhyolite magma types are present. The first is an older, low-Nb rhyolite that was erupted episodically along a cryptic curved fracture system, to form a discontinuous ring of rhyolite mountains, between 350 and 250 ka. This discontinuous ring is similar to structures observed at other volcanoes in Iceland, suggesting that the development of a curved fracture that acts as a pathway for episodic silicic eruptions is a feature of central volcano development. The second magma is a younger, high-Nb rhyolite that was erupted episodically between 250 and 68 ka in the northern part of Kerlingarfjöll, forming two clusters, both of which have areas of intense hydrothermal activity. Repose periods for rhyolite volcanism are thought to be on the order of tens of thousands of years, and it is possible that Kerlingarfjöll will erupt rhyolite again in the future. |
format |
Article in Journal/Newspaper |
author |
Flude, Stephanie McGarvie, David W. Burgess, Ray Tindle, Andrew G. |
spellingShingle |
Flude, Stephanie McGarvie, David W. Burgess, Ray Tindle, Andrew G. Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
author_facet |
Flude, Stephanie McGarvie, David W. Burgess, Ray Tindle, Andrew G. |
author_sort |
Flude, Stephanie |
title |
Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
title_short |
Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
title_full |
Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
title_fullStr |
Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
title_full_unstemmed |
Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes |
title_sort |
rhyolites at kerlingarfjöll, iceland: the evolution and lifespan of silicic central volcanoes |
publishDate |
2010 |
url |
https://oro.open.ac.uk/20943/ https://oro.open.ac.uk/20943/1/Flude_2010_proof.pdf https://doi.org/10.1007/s00445-010-0344-0 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
https://oro.open.ac.uk/20943/1/Flude_2010_proof.pdf Flude, Stephanie <http://oro.open.ac.uk/view/person/sf4764.html>; McGarvie, David W. <http://oro.open.ac.uk/view/person/dwm4.html>; Burgess, Ray and Tindle, Andrew G. <http://oro.open.ac.uk/view/person/agt2.html> (2010). Rhyolites at Kerlingarfjöll, Iceland: The evolution and lifespan of silicic central volcanoes. Bulletin of Volcanology, 72(5) pp. 523–528. |
op_doi |
https://doi.org/10.1007/s00445-010-0344-0 |
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Bulletin of Volcanology |
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72 |
container_issue |
5 |
container_start_page |
523 |
op_container_end_page |
538 |
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1768389718023602176 |