Dear Friends, There is a new paper about the Permian-Triassic extinction in Chemical Geology. It is:
Brookfield, M. E., J. G. Shellnutt, L .Qi, R. Hannigan, G. M. Bhat , and P. B. Wignall, 2010, Platinum element group variations at the Permo–Triassic boundary in Kashmir and British Columbia and their significance. Chemical Geology. vol. 272, pp. 12-19. the abstract is at: "http://dx.doi.org/10.1016/j.chemgeo.2010.01.008 The paper concludes that the sources of the platinum element group anomalies found at and near the Permian-Triassic boundary are “either contemporaneous seawater or older basaltic volcanics associated with the sections and the PGE were precipitated by a possible combination of development of anoxia in the oceans and post-depositional redistribution.” A related paper is: Brookfield, M. E., R. J. Twitchett and C. Goodings, 2003, Palaeoenvironments of the Permian–Triassic transition sections in Kashmir, India. Palaeogeography, Palaeoclimatology, Palaeoecology. vol. 198, no. 3-4, pp. 353-371. http://dx.doi.org/10.1016/S0031-0182(03)00476-0 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
