Platinum-group elements link the end-Triassic mass extinction to volcanism
Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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 and Pt/Ir ratios are similar to marine and terrestrial sediments at the ETE, and
very different from potential impactors. Hence, the PGEs provide a new temporal correlation of CAMP volcanism
to the ETE, corroborating the view that mass extinctions may be caused by volcanism.
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 and Pt/Ir ratios are similar to marine and terrestrial sediments at the ETE, and
very different from potential impactors. Hence, the PGEs provide a new temporal correlation of CAMP volcanism
to the ETE, corroborating the view that mass extinctions may be caused by volcanism.
Original language | English |
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Publication date | 2019 |
Publication status | Published - 2019 |
Event | EGU Galileo Conference: Mass extinctions, recovery and resilience - Utrecht, Netherlands Duration: 28 Aug 2019 → 31 Aug 2019 Conference number: 5 https://meetingorganizer.copernicus.org/gc5-mass/sessionprogramme |
Conference
Conference | EGU Galileo Conference |
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Number | 5 |
Country | Netherlands |
City | Utrecht |
Period | 28/08/2019 → 31/08/2019 |
Internet address |
- Faculty of Science - mass extinction, Triassic, Jurassic, volcanism
Research areas
Links
- https://meetingorganizer.copernicus.org/GC5-Mass/GC5-Mass-41.pdf
Final published version
ID: 359341254