Steve wrote: When Rob Elliott was in Chicago back in 2002, we were talking about LAKE MURRAY, the iron, possibly being the smoking gun.
Mike T. responded: Thanks Steve! That's the one. According to Sicree et al., Lake Murray is one of the oldest or possibly the oldest paleoiron (terrestrial age = 120 m.y.), but it is not the one that killed the dinosaurs! Reference: SICREE A.A. et al. (1997) Potential for preservation and recovery of fossil iron meteorites from coal, trona, limestone and other sedimentary rocks (Meteoritics 32-4, 1997, A121). Traces of the smoking gun may have been found in a Chicxulub drillcore - an impact breccia (suevite) only 10 mm in diameter. The authors conclude that it was possibly a carbonaceous chondrite. Reference: MORTON-BERMEA O. et al. (2003) First evidence of Chicxulub impact bolide projectile at the Yaxcopoil-I drill (MAPS 38-7, 2003, A101). Cheers, Bernd ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
