Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province-Reference-Cited by-同舟云学术

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

Published:2020-02-26 Issue:1 Volume:10 Page:
ISSN:2045-2322
Container-title:Scientific Reports
language:en
Short-container-title:Sci Rep

Author:

Tegner Christian^ORCID,Marzoli Andrea^ORCID,McDonald Iain^ORCID,Youbi Nasrrddine^ORCID,Lindström Sofie^ORCID

Abstract

AbstractElevated 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.

Funder

Danmarks Grundforskningsfond

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

Link

http://www.nature.com/articles/s41598-020-60483-8.pdf

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