Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province

Elevated concentrations of iridium (Ir) and other platinum-group elements (PGE) have been reported in both terrestrial and marine sediments associated with the end-Triassic mass extinction (ETE) c. 201.5 million years ago. The source of the PGEs has been attributed to condensed vapor and melt from a...

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Autores principales: Tegner, Christian, Marzoli, Andrea, McDonald, Iain, Youbi, Nasrrddine, Lindström, Sofie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7044291/
https://www.ncbi.nlm.nih.gov/pubmed/32103087
http://dx.doi.org/10.1038/s41598-020-60483-8
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author Tegner, Christian
Marzoli, Andrea
McDonald, Iain
Youbi, Nasrrddine
Lindström, Sofie
author_facet Tegner, Christian
Marzoli, Andrea
McDonald, Iain
Youbi, Nasrrddine
Lindström, Sofie
author_sort Tegner, Christian
collection PubMed
description Elevated concentrations of iridium (Ir) and other platinum-group elements (PGE) have been reported in both terrestrial and marine sediments associated with the end-Triassic mass extinction (ETE) c. 201.5 million years ago. The source of the PGEs has been attributed to condensed vapor and melt from an extraterrestrial impactor or to volcanism. Here we report new PGE data for volcanic rocks of the Central Atlantic Magmatic Province (CAMP) in Morocco and show that their Pd/Ir, Pt/Ir and Pt/Rh ratios are similar to marine and terrestrial sediments at the ETE, and very different from potential impactors. Hence, we propose the PGEs provide a new temporal correlation of CAMP volcanism to the ETE, corroborating the view that mass extinctions may be caused by volcanism.
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spelling pubmed-70442912020-03-04 Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province Tegner, Christian Marzoli, Andrea McDonald, Iain Youbi, Nasrrddine Lindström, Sofie Sci Rep Article Elevated concentrations of iridium (Ir) and other platinum-group elements (PGE) have been reported in both terrestrial and marine sediments associated with the end-Triassic mass extinction (ETE) c. 201.5 million years ago. The source of the PGEs has been attributed to condensed vapor and melt from an extraterrestrial impactor or to volcanism. Here we report new PGE data for volcanic rocks of the Central Atlantic Magmatic Province (CAMP) in Morocco and show that their Pd/Ir, Pt/Ir and Pt/Rh ratios are similar to marine and terrestrial sediments at the ETE, and very different from potential impactors. Hence, we propose the PGEs provide a new temporal correlation of CAMP volcanism to the ETE, corroborating the view that mass extinctions may be caused by volcanism. Nature Publishing Group UK 2020-02-26 /pmc/articles/PMC7044291/ /pubmed/32103087 http://dx.doi.org/10.1038/s41598-020-60483-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Tegner, Christian
Marzoli, Andrea
McDonald, Iain
Youbi, Nasrrddine
Lindström, Sofie
Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title_full Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title_fullStr Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title_full_unstemmed Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title_short Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province
title_sort platinum-group elements link the end-triassic mass extinction and the central atlantic magmatic province
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7044291/
https://www.ncbi.nlm.nih.gov/pubmed/32103087
http://dx.doi.org/10.1038/s41598-020-60483-8
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