According to Cr and Mn isotopic analyses of KTB samples, the impactor was a carbonaceous chondrite - see report at:
http://www.lpi.usra.edu/meetings/impact2000/pdf/3041.pdf Ted Bunch On 4/13/08 7:48 AM, "E.P. Grondine" <[EMAIL PROTECTED]> wrote: > Hi Sterling, all - > >> From the article: > > "Another possibility is that the impacting objects > were comets rather than asteroids, and contained much > less osmium to begin with. But chemical traces of > the impactors left behind in rocks and reported in > previous studies suggest otherwise." > > The last I heard, the impactor was "carbonaceous > chondrite", i.l. "comet", and K-T fossil meteorite > showed that. Has this changed? > > E.P. Grondine > Man and Impact in the Americas > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
