Platinum-group elements link the end-Triassic mass extinction to volcanism
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Platinum-group elements link the end-Triassic mass extinction to volcanism. / Tegner, Christian; Marzoli, Andrea; McDonald, Iain; Youbi, Nasrrddine; Lindström, Sofie.
2019. Abstract from EGU Galileo Conference, Utrecht, Netherlands.Research output: Contribution to conference › Conference abstract for conference › Research › peer-review
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TY - ABST
T1 - Platinum-group elements link the end-Triassic mass extinction to volcanism
AU - Tegner, Christian
AU - Marzoli, Andrea
AU - McDonald, Iain
AU - Youbi, Nasrrddine
AU - Lindström, Sofie
N1 - Conference code: 5
PY - 2019
Y1 - 2019
N2 - 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 tovolcanism. 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, andvery different from potential impactors. Hence, the PGEs provide a new temporal correlation of CAMP volcanismto the ETE, corroborating the view that mass extinctions may be caused by volcanism.
AB - 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 tovolcanism. 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, andvery different from potential impactors. Hence, the PGEs provide a new temporal correlation of CAMP volcanismto the ETE, corroborating the view that mass extinctions may be caused by volcanism.
KW - Faculty of Science
KW - mass extinction
KW - Triassic
KW - Jurassic
KW - volcanism
M3 - Conference abstract for conference
T2 - EGU Galileo Conference
Y2 - 28 August 2019 through 31 August 2019
ER -
ID: 359341254