No link between the Panjal Traps (Kashmir) and the Late Permian mass extinctions

J. G. Shellnutt, G. M. Bhat, M. E. Brookfield, B. M. Jahn

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Voluminous Late Permian flood basalt eruptions are contemporaneous with the mid-Capitanian (260 Ma) and end-Permian (251 Ma) mass extinction events. The Panjal Traps of Kashmir are thought to be correlative to the mid-Capitanian mass extinction however no radiometric age has been determined. We report a single zircon U-Pb laser ablation ICP-MS date of a rhyolite from the lower-middle part of the volcanic sequence. Twenty-four individual zircon crystals yield a mean 206U/238Pb age of 289 3 Ma. The results show that the Panjal Traps are considerably older than previously interpreted and not correlative to post-Neo-Tethys rifting of the Gondwanan margin or the mid-Capitanian mass extinction and are, in fact, correlative to the opening of the Neo-Tethys Ocean. In contrast to other similarly size large igneous provinces, the Panjal Traps are not coincident with a mass extinction event and therefore casts doubt on the direct relationship between continental flood basalt volcanism and ecosystem collapse.

Original languageEnglish
Article numberL19308
JournalGeophysical Research Letters
Volume38
Issue number19
DOIs
Publication statusPublished - 2011 Oct 1

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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