An online article in the new issue of Nature discusses whether either an extraterrestrial impact or volcanic eruption caused mass extinctions at the end of the Triasssic about 200 million years ago. The article is:
Smith, Roff, 2011, Dark days of the Triassic: Lost world. Nature. vol. 479, pp. 287-289. DOI: doi:10.1038/479287a http://www.nature.com/news/dark-days-of-the-triassic-lost-world-1.9375 "Did a giant impact 200 million years ago trigger a mass extinction and pave the way for the dinosaurs?" Free pdf version of the article at: http://www.nature.com/polopoly_fs/1.9375!/import/pdf/479287a.pdf Yours, Paul H. ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
