Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province
Early Eocene sediments in northwest Denmark contain over 180 well-preserved volcanic ash layers, likely sourced from the North Atlantic Igneous Province (NAIP) between 56.0 and 54.6 Ma. Most of these ashes are basaltic, widespread, and represent a phase of unusually large and explosive eruptions tha...
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ftoslouniv:oai:www.duo.uio.no:10852/81299 2023-05-15T17:29:09+02:00 Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas 2020-11-19T11:28:01Z http://hdl.handle.net/10852/81299 http://urn.nb.no/URN:NBN:no-84296 https://doi.org/10.30909/vol.03.02.227250 EN eng NFR/263000 NFR/223272 http://urn.nb.no/URN:NBN:no-84296 Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas . Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province. Volcanica. 2020, 3(2), 227-250 http://hdl.handle.net/10852/81299 1849751 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Volcanica&rft.volume=3&rft.spage=227&rft.date=2020 Volcanica 3 2 227 250 https://doi.org/10.30909/vol.03.02.227250 URN:NBN:no-84296 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81299/1/Stokke%2Bet%2Bal%2B2020%2BVolcanica.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2610-3540 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2020 ftoslouniv https://doi.org/10.30909/vol.03.02.227250 2020-12-02T23:30:33Z Early Eocene sediments in northwest Denmark contain over 180 well-preserved volcanic ash layers, likely sourced from the North Atlantic Igneous Province (NAIP) between 56.0 and 54.6 Ma. Most of these ashes are basaltic, widespread, and represent a phase of unusually large and explosive eruptions that is coincident with the opening of the northeast Atlantic Ocean. Explosive basaltic eruptions of this magnitude are unheard of in historical times and in the current geological record. Here, we combine analyses of glass sulfur concentrations and variations in morphology and vesicularity of pristine volcanic glass grains to explore the possible eruptive processes promoting such widespread basaltic ash dispersal. We suggest that these ashes formed in shallow subaqueous environments (<200 m water depth) where they fragmented and rapidly quenched during explosive hydromagmatic activity. We speculate that magma-water interaction during the opening of the northeast Atlantic was the main cause of this unusual explosive basaltic activity. Article in Journal/Newspaper North Atlantic Northeast Atlantic Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Volcanica 3 2 227 250 |
institution |
Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
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ftoslouniv |
language |
English |
description |
Early Eocene sediments in northwest Denmark contain over 180 well-preserved volcanic ash layers, likely sourced from the North Atlantic Igneous Province (NAIP) between 56.0 and 54.6 Ma. Most of these ashes are basaltic, widespread, and represent a phase of unusually large and explosive eruptions that is coincident with the opening of the northeast Atlantic Ocean. Explosive basaltic eruptions of this magnitude are unheard of in historical times and in the current geological record. Here, we combine analyses of glass sulfur concentrations and variations in morphology and vesicularity of pristine volcanic glass grains to explore the possible eruptive processes promoting such widespread basaltic ash dispersal. We suggest that these ashes formed in shallow subaqueous environments (<200 m water depth) where they fragmented and rapidly quenched during explosive hydromagmatic activity. We speculate that magma-water interaction during the opening of the northeast Atlantic was the main cause of this unusual explosive basaltic activity. |
format |
Article in Journal/Newspaper |
author |
Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas |
spellingShingle |
Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
author_facet |
Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas |
author_sort |
Stokke, Ella Wulfsberg |
title |
Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
title_short |
Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
title_full |
Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
title_fullStr |
Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
title_full_unstemmed |
Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province |
title_sort |
evidence of explosive hydromagmatic eruptions during the emplacement of the north atlantic igneous province |
publishDate |
2020 |
url |
http://hdl.handle.net/10852/81299 http://urn.nb.no/URN:NBN:no-84296 https://doi.org/10.30909/vol.03.02.227250 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
2610-3540 |
op_relation |
NFR/263000 NFR/223272 http://urn.nb.no/URN:NBN:no-84296 Stokke, Ella Wulfsberg Liu, Emma Jones, Morgan Thomas . Evidence of explosive hydromagmatic eruptions during the emplacement of the North Atlantic Igneous Province. Volcanica. 2020, 3(2), 227-250 http://hdl.handle.net/10852/81299 1849751 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Volcanica&rft.volume=3&rft.spage=227&rft.date=2020 Volcanica 3 2 227 250 https://doi.org/10.30909/vol.03.02.227250 URN:NBN:no-84296 Fulltext https://www.duo.uio.no/bitstream/handle/10852/81299/1/Stokke%2Bet%2Bal%2B2020%2BVolcanica.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.30909/vol.03.02.227250 |
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Volcanica |
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3 |
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2 |
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227 |
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250 |
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1766122770382454784 |