Synchronism of the Siberian Traps and the Permian-Triassic Boundary

  title={Synchronism of the Siberian Traps and the Permian-Triassic Boundary},
  author={Ian H. Campbell and Gerald K. Czamanske and V. A. Fedorenko and R. I. Hill and V. S. Stepanov},
  pages={1760 - 1763}
Uranium-lead ages from an ion probe were taken for zircons from the ore-bearing Noril'sk I intrusion that is comagmatic with, and intrusive to, the Siberian Traps. These values match, within an experimental error of �4 million years, the dates for zircons extracted from a tuff at the Permian-Triassic (P-Tr) boundary. The results are consistent with the hypothesis that the P-Tr extinction was caused by the Siberian basaltic flood volcanism. It is likely that the eruption of these magmas was… 
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