A minimum U-Pb age for Siberian flood-basalt volcanism
Geochimica et Cosmochimica Acta
By: S.L. Kamo, G.K. Czamanske, and T.E. Krogh
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Abstract
Establishing an accurate and precise age for Siberian flood-basalt volcanism is of great importance in evaluating causes for the unequaled mass extinction of flora and fauna at the Permian-Triassic boundary. We report a new, minimum U-Pb age obtained from zircon and baddeleyite from the mineralized Noril'sk I intrusion that cuts the lower third of this rapidly deposited, 3500-m-thick volcanic sequence near Noril'sk. This 251.2 ?? 0.3 (2??) Ma age is within analytical error of the SHRIMP U-Pb age for zircon from the Permian-Triassic boundary at Meishan, South China [251.1 ?? 3.6 Ma (2??)], and confirms Siberian basaltic volcanism as a possible contributor to the mass extinction.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | A minimum U-Pb age for Siberian flood-basalt volcanism |
| Series title | Geochimica et Cosmochimica Acta |
| DOI | 10.1016/0016-7037(96)00173-1 |
| Volume | 60 |
| Issue | 18 |
| Year Published | 1996 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geochimica et Cosmochimica Acta |
| First page | 3505 |
| Last page | 3511 |
| Google Analytic Metrics | Metrics page |