If a c chondrite or comet with considerable amount of carbon exploded over the polar ice sheet , could it create the nano diamonds without leaving behind a crater? as in an ice crater that melted? or was the land bridge in the Bearing Straits really an ice bridge? and was Northwest Africa made into a green paradise while north America was covered in ice? It seems to me the impact would have had a global effect causing winter everywhere for a while, including Africa. What supporting evidence can be found elsewhere? I am not trying to discount the research but believe there will be found other supporting data on a global scale. A time machine would be pretty handy to see what really happened! have a great day! and be thankful you never get hit by a train Steve
--- On Wed, 3/25/09, Paul <bristo...@yahoo.com> wrote: > From: Paul <bristo...@yahoo.com> > Subject: [meteorite-list] Kennett Talk and NOVA special on Younger Dryas > Impacts > To: meteorite-list@meteoritecentral.com > Date: Wednesday, March 25, 2009, 8:50 AM > > E.P. Grondine mentioned the below NOVA Special in his > post, > “[meteorite-list] NOVA special on Holocene Start Impacts > and AD”. > > PBS Program to Feature Two UMaine Scientists, March 23, > 2009 > http://www.umaine.edu/news/view_release.php?x=1237809989 > > Dr. Kennett gave a talk, which included a lot of research > that is either > being prepared for publication, been submitted for > publication, and in > press. Dr. Kennett made a very convincing case that > something unique, > extraordinary, and instantaneous occurred at the beginning > of the > Younger Dryas about 12,900 B. calender years ago and could > be an > event that was extraterrestrial in nature. His idea that it > involved > multiple, simultaneous Tunguska-like events occurring > across the > North American continent. > > He also, discussed and showed pictures of the research on > the > Greenland ice sheet, carried out by Paul Mayewski, and > Andrei > Kurbatov. Outcropping along the edge of the Greenland Ice > Sheet > is a well defined Younger Dryas bed, which consists of dark > grey > dusty ice with clean, white Holocene ice above it and > clean, white > terminal Pleistocene ice below it. They found the > nannodiamonds > and other alleged impact indicators right at and only at > the basal > contact of the Younger Dryas ice layer. They found exactly > what > would be expected for an layer of meteoritic debris from > Tunguska- > like events. > > This is a show that you do not want to miss. > > It is in the realm of possibility, that decade or so from > now, Dr. > West, Dr. Kennett, and other members the YDB Group will > likely > be known as the "Walter Alvarezes of the Quaternary. > > I am now getting together with a couple of archaeologists > to do > some “prospecting” for nannodiamonds and > microspherules. > > Some relevant publications: > > Haynes, V. C., Jr., 2008, Younger Dryas “black mats” > and the > Rancholabrean termination in North America. Proceedings of > the > National Academy of Sciences. vol. 105 no. 18 > 6520-6525 > http://www.pnas.org/content/105/18/6520.abstract > > Did a Significant Cool Spell Mark the Demise of Megafauna? > http://uanews.org/node/19409 > > Kennett, J.D., J.P. Kennett, G.J. West, J.M. Erlandson, > J.R. > Johnson, I.L. Hendy, A. West, B.J. Culleton, T.L. Jones and > > Thomas W. Stafford Jr., 2008, Quaternary Science Reviews. > vol. 27, no. 27-28, pp. 2530-2545. > http://dx.doi.org/10.1016/j.quascirev.2008.09.006 > > Kennett, D.J., J. P. Kennett, A. West, C. Mercer, S. S. Que > > Hee, and L. Bement, 2009, Nanodiamonds in the Younger Dryas > > Boundary Sediment Layer. Science. vol. 323, no. 5910, p. > 94. > http://www.sciencemag.org/cgi/content/abstract/323/5910/94 > > Best Regards, > > Paul H > > > > ______________________________________________ > http://www.meteoritecentral.com > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ http://www.meteoritecentral.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
