The main pulse of the Siberian Traps expanded in size and composition
Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. Taimyr and West Siberia, have since long been correlated, but existing geo...
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ftoslouniv:oai:www.duo.uio.no:10852/76366 2023-05-15T17:25:03+02:00 The main pulse of the Siberian Traps expanded in size and composition Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik 2019-12-11T12:43:21Z http://hdl.handle.net/10852/76366 http://urn.nb.no/URN:NBN:no-79429 https://doi.org/10.1038/s41598-019-54023-2 EN eng NFR/223272 http://urn.nb.no/URN:NBN:no-79429 Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik . The main pulse of the Siberian Traps expanded in size and composition. Scientific Reports. 2019 http://hdl.handle.net/10852/76366 1759275 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Scientific Reports&rft.volume=&rft.spage=&rft.date=2019 Scientific Reports 9 1 https://doi.org/10.1038/s41598-019-54023-2 URN:NBN:no-79429 Fulltext https://www.duo.uio.no/bitstream/handle/10852/76366/2/s41598-019-54023-2.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2045-2322 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2019 ftoslouniv https://doi.org/10.1038/s41598-019-54023-2 2020-06-21T08:54:32Z Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. Taimyr and West Siberia, have since long been correlated, but existing geochronological data cannot resolve at a precision better than ~5 m.y. whether (sub)volcanic activity in these areas actually occurred during the main pulse or later. We report the first high precision U-Pb zircon geochronology from two alkaline ultramafic-felsic layered intrusive complexes from Taimyr, showing synchronicity between these and the main Siberian Traps (sub)volcanic pulse, and the presence of a second Dinerian-Smithian pulse. This is the first documentation of felsic intrusive magmatism occurring during the main pulse, testifying to the Siberian Trap’s compositional diversity. Furthermore, the intrusions cut basal basalts of the Taimyr lava stratigraphy hence providing a minimum age of these basalts of 251.64 ± 0.11 Ma. Synchronicity of (sub)volcanic activity between Taimyr and the Siberian Traps imply that the total area of the Siberian Traps main pulse should include a ~300 000 km2 area north of Norilsk. The vast aerial extent of the (sub)volcanic activity during the Siberian Traps main pulse may explain the severe environmental consequences. Article in Journal/Newspaper norilsk Taimyr Siberia Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Norilsk ENVELOPE(88.203,88.203,69.354,69.354) Scientific Reports 9 1 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Emplacement of large volumes of (sub)volcanic rocks during the main pulse of the Siberian Traps occurred within <1 m.y., coinciding with the end-Permian mass extinction. Volcanics from outside the main Siberian Traps, e.g. Taimyr and West Siberia, have since long been correlated, but existing geochronological data cannot resolve at a precision better than ~5 m.y. whether (sub)volcanic activity in these areas actually occurred during the main pulse or later. We report the first high precision U-Pb zircon geochronology from two alkaline ultramafic-felsic layered intrusive complexes from Taimyr, showing synchronicity between these and the main Siberian Traps (sub)volcanic pulse, and the presence of a second Dinerian-Smithian pulse. This is the first documentation of felsic intrusive magmatism occurring during the main pulse, testifying to the Siberian Trap’s compositional diversity. Furthermore, the intrusions cut basal basalts of the Taimyr lava stratigraphy hence providing a minimum age of these basalts of 251.64 ± 0.11 Ma. Synchronicity of (sub)volcanic activity between Taimyr and the Siberian Traps imply that the total area of the Siberian Traps main pulse should include a ~300 000 km2 area north of Norilsk. The vast aerial extent of the (sub)volcanic activity during the Siberian Traps main pulse may explain the severe environmental consequences. |
format |
Article in Journal/Newspaper |
author |
Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik |
spellingShingle |
Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik The main pulse of the Siberian Traps expanded in size and composition |
author_facet |
Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik |
author_sort |
Augland, Lars Eivind |
title |
The main pulse of the Siberian Traps expanded in size and composition |
title_short |
The main pulse of the Siberian Traps expanded in size and composition |
title_full |
The main pulse of the Siberian Traps expanded in size and composition |
title_fullStr |
The main pulse of the Siberian Traps expanded in size and composition |
title_full_unstemmed |
The main pulse of the Siberian Traps expanded in size and composition |
title_sort |
main pulse of the siberian traps expanded in size and composition |
publishDate |
2019 |
url |
http://hdl.handle.net/10852/76366 http://urn.nb.no/URN:NBN:no-79429 https://doi.org/10.1038/s41598-019-54023-2 |
long_lat |
ENVELOPE(88.203,88.203,69.354,69.354) |
geographic |
Norilsk |
geographic_facet |
Norilsk |
genre |
norilsk Taimyr Siberia |
genre_facet |
norilsk Taimyr Siberia |
op_source |
2045-2322 |
op_relation |
NFR/223272 http://urn.nb.no/URN:NBN:no-79429 Augland, Lars Eivind Ryabov, Viktor V. Vernikovsky, Valery A. Planke, Sverre Polozov, Alexander Callegaro, Sara Jerram, Dougal Alexander Svensen, Henrik . The main pulse of the Siberian Traps expanded in size and composition. Scientific Reports. 2019 http://hdl.handle.net/10852/76366 1759275 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Scientific Reports&rft.volume=&rft.spage=&rft.date=2019 Scientific Reports 9 1 https://doi.org/10.1038/s41598-019-54023-2 URN:NBN:no-79429 Fulltext https://www.duo.uio.no/bitstream/handle/10852/76366/2/s41598-019-54023-2.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-019-54023-2 |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766116351743623168 |