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TitleNickel isotopes link Siberian Traps aerosol particles to the end-Permian mass extinction
AuthorLi, MORCID logo; Grasby, S EORCID logo; Wang, S-L; Zhang, X; Wasylenki, L E; Xu, Y; Sun, M; Beauchamp, B; Hu, D; Shen, Y
SourceNature Communications vol. 12, 2024, 2021 p. 1-7, Open Access logo Open Access
Alt SeriesNatural Resources Canada, Contribution Series 20210011
Mediapaper; on-line; digital
File formatpdf; html
AreaAxel Heiberg island; Canada
Lat/Long WENS-120.0000 -75.0000 85.0000 75.0000
SubjectsScience and Technology; geochemistry; nickel; nickel geochemistry; Arctic Canada; Permian
Illustrationslocation maps; graphs; diagrams
ProgramGEM2: Geo-mapping for Energy and Minerals Western Arctic, Pearya Terrane, North Ellesmere
Released2021 04 01
AbstractThe end-Permian mass extinction (EPME) was the most severe extinction event in the past 540 million years, and the Siberian Traps large igneous province (STLIP) is widely hypothesized to have been the primary trigger for the environmental catastrophe. The killing mechanisms depend critically on the nature of volatiles ejected during STLIP eruptions, initiating about 300 kyr before the extinction event, because the atmosphere is the primary interface between magmatism and extinction. Here we report Ni isotopes for Permian-Triassic sedimentary rocks from Arctic Canada. Thed60Ni data range from -1.09% to 0.35%, and exhibit the lightestd60Ni compositions ever reported for sedimentary rocks. Our results provide strong evidence for global dispersion and loading of Ni-rich aerosol particles into the Panthalassic Ocean. Our data demonstrate that environmental degradation had begun well before the extinction event and provide a link between global dispersion of Ni-rich aerosols, ocean chemistry changes, and the EPME.
Summary(Plain Language Summary, not published)
This work uses novel stable isotopes of nickle to trace the origin of high nickle values in sediments of the Canadian Arctic and are able to demonstrate that they relate to a massive volcanic eruption that had significant deliterious impact on the global environment.

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