A large explosive silicic eruption in the British Palaeogene Igneous Province
Large-volume pyroclastic eruptions are not known from the basalt-dominated British Palaeogene Igneous Province (BPIP), although silicic magmatism is documented from intra-caldera successions in central volcanoes and from small-volume ash-layers in the associated lava fields. Exceptions are the Sgùrr...
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2019
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/a-large-explosive-silicic-eruption-in-the-british-palaeogene-igneous-province(0fb06f22-3c8f-4fea-8e0a-aa773bf674b3).html https://doi.org/10.1038/s41598-018-35855-w https://research-repository.st-andrews.ac.uk/bitstream/10023/16963/1/Troll_2019_SR_Siliciceruption_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/0fb06f22-3c8f-4fea-8e0a-aa773bf674b3 2024-06-23T07:55:10+00:00 A large explosive silicic eruption in the British Palaeogene Igneous Province Troll, Valentin R Emeleus, C Henry Nicoll, Graeme R Mattsson, Tobias Ellam, Robert M Donaldson, Colin H Harris, Chris 2019-01-24 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/a-large-explosive-silicic-eruption-in-the-british-palaeogene-igneous-province(0fb06f22-3c8f-4fea-8e0a-aa773bf674b3).html https://doi.org/10.1038/s41598-018-35855-w https://research-repository.st-andrews.ac.uk/bitstream/10023/16963/1/Troll_2019_SR_Siliciceruption_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/a-large-explosive-silicic-eruption-in-the-british-palaeogene-igneous-province(0fb06f22-3c8f-4fea-8e0a-aa773bf674b3).html info:eu-repo/semantics/openAccess Troll , V R , Emeleus , C H , Nicoll , G R , Mattsson , T , Ellam , R M , Donaldson , C H & Harris , C 2019 , ' A large explosive silicic eruption in the British Palaeogene Igneous Province ' , Scientific Reports , vol. 9 , 494 . https://doi.org/10.1038/s41598-018-35855-w article 2019 ftunstandrewcris https://doi.org/10.1038/s41598-018-35855-w 2024-06-13T01:05:10Z Large-volume pyroclastic eruptions are not known from the basalt-dominated British Palaeogene Igneous Province (BPIP), although silicic magmatism is documented from intra-caldera successions in central volcanoes and from small-volume ash-layers in the associated lava fields. Exceptions are the Sgùrr of Eigg (58.7 Ma) and Òigh-sgeir pitchstones in the Inner Hebrides (>30 km apart), which have been conjectured to represent remnants of a single large silicic event. Currently available major element data from these outcrops differ, however, creating a need to test if the two pitchstones are really related. We employ a systematic array of methods ranging from mineralogy to isotope geochemistry and find that samples from the two outcrops display identical mineral textures and compositions, major- and trace elements, and Sr-Nd-Pb-O isotope ratios, supporting that the two outcrops represent a single, formerly extensive, pyroclastic deposit. Available isotope constraints suggest a vent in the Hebridean Terrane and available radiometric ages point to Skye, ~40 km to the North. A reconstructed eruption volume of ≥5km3 DRE is derived, suggesting a VEI 5 event or larger. We therefore argue, contrary to long-held perception, that large-volume silicic volcanism and its associated climatic effects were likely integral to the BPIP during the opening of the North Atlantic. Article in Journal/Newspaper North Atlantic University of St Andrews: Research Portal Scientific Reports 9 1 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
Large-volume pyroclastic eruptions are not known from the basalt-dominated British Palaeogene Igneous Province (BPIP), although silicic magmatism is documented from intra-caldera successions in central volcanoes and from small-volume ash-layers in the associated lava fields. Exceptions are the Sgùrr of Eigg (58.7 Ma) and Òigh-sgeir pitchstones in the Inner Hebrides (>30 km apart), which have been conjectured to represent remnants of a single large silicic event. Currently available major element data from these outcrops differ, however, creating a need to test if the two pitchstones are really related. We employ a systematic array of methods ranging from mineralogy to isotope geochemistry and find that samples from the two outcrops display identical mineral textures and compositions, major- and trace elements, and Sr-Nd-Pb-O isotope ratios, supporting that the two outcrops represent a single, formerly extensive, pyroclastic deposit. Available isotope constraints suggest a vent in the Hebridean Terrane and available radiometric ages point to Skye, ~40 km to the North. A reconstructed eruption volume of ≥5km3 DRE is derived, suggesting a VEI 5 event or larger. We therefore argue, contrary to long-held perception, that large-volume silicic volcanism and its associated climatic effects were likely integral to the BPIP during the opening of the North Atlantic. |
format |
Article in Journal/Newspaper |
author |
Troll, Valentin R Emeleus, C Henry Nicoll, Graeme R Mattsson, Tobias Ellam, Robert M Donaldson, Colin H Harris, Chris |
spellingShingle |
Troll, Valentin R Emeleus, C Henry Nicoll, Graeme R Mattsson, Tobias Ellam, Robert M Donaldson, Colin H Harris, Chris A large explosive silicic eruption in the British Palaeogene Igneous Province |
author_facet |
Troll, Valentin R Emeleus, C Henry Nicoll, Graeme R Mattsson, Tobias Ellam, Robert M Donaldson, Colin H Harris, Chris |
author_sort |
Troll, Valentin R |
title |
A large explosive silicic eruption in the British Palaeogene Igneous Province |
title_short |
A large explosive silicic eruption in the British Palaeogene Igneous Province |
title_full |
A large explosive silicic eruption in the British Palaeogene Igneous Province |
title_fullStr |
A large explosive silicic eruption in the British Palaeogene Igneous Province |
title_full_unstemmed |
A large explosive silicic eruption in the British Palaeogene Igneous Province |
title_sort |
large explosive silicic eruption in the british palaeogene igneous province |
publishDate |
2019 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-large-explosive-silicic-eruption-in-the-british-palaeogene-igneous-province(0fb06f22-3c8f-4fea-8e0a-aa773bf674b3).html https://doi.org/10.1038/s41598-018-35855-w https://research-repository.st-andrews.ac.uk/bitstream/10023/16963/1/Troll_2019_SR_Siliciceruption_CC.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Troll , V R , Emeleus , C H , Nicoll , G R , Mattsson , T , Ellam , R M , Donaldson , C H & Harris , C 2019 , ' A large explosive silicic eruption in the British Palaeogene Igneous Province ' , Scientific Reports , vol. 9 , 494 . https://doi.org/10.1038/s41598-018-35855-w |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/a-large-explosive-silicic-eruption-in-the-british-palaeogene-igneous-province(0fb06f22-3c8f-4fea-8e0a-aa773bf674b3).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-018-35855-w |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
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1802647621619154944 |