[meteorite-list] Debate Over Younger Dryas Impact Hypothesis Continues

[GERALD FLAHERTY]

DEBATE IS GOOD. Ridicule less so.
Thanks Paul. As always your post are a welcome source of pertinent information
On Sep 3, 2010, at 2:39 PM, Paul H. wrote:

> On the side of people disputing the Younger Dryas Impact 
> hypothesis there is:
> 
> Kerr, R. A., 2010, Mammoth-Killer Impact Rejected.
> Science Now, August 30, 2010 
> http://news.sciencemag.org/sciencenow/2010/08/mammoth-killer-impact-rejected.html
> 
> Dalton, R., 2010, Comet theory carbonized: Sediment 
> studies rule out impact as cause of ancient cold spell.
> Nature News. August 31, 2010. 
> http://www.nature.com/news/2010/100831/full/news.2010.441.html
> 
> Impact hypothesis loses its sparkle, Physorg.
> August 30, 2010, 
> http://www.physorg.com/news202382634.html
> http://www.physorg.com/news195979458.html
> 
> Kerr, R. A, 2010, Mammoth-Killer Impact Flunks Out.
> Science, vol.  329, no. 5996, pp. 1140 - 1141
> DOI: 10.1126/science.329.5996.1140 
> http://www.sciencemag.org/cgi/content/summary/329/5996/1140
> 
> The paper is:
> 
> Daulton, T. L., N. Pinter, and A. C. Scott, 2010,
> No evidence of nanodiamonds in Younger–Dryas 
> sediments to support an impact event. Proceedings
> of the National Academy of Science of the United 
> States. Published online before print August 30, 2010, 
> doi: 10.1073/pnas.1003904107 
> http://www.pnas.org/content/early/2010/08/26/1003904107.abstract?sid=f62eef7c-9d13-48e9-a003-ddd93d93d75b
> 
> On the other hand, the BBC Article stated:
> 
> “Allen West said further nanodiamond evidence in support 
> of the impact theory would be published in the coming weeks.”
> 
> One of these papers is:
> 
> Kurbatov, A. V., P. A. Mayewski, J. P. Steffensen, A. West, D. J. 
> Kennett, J. P. Kennett, T. E. Bunch, M. Handley, D. S. Introne, 
> S. S. Que Hee, C. Mercer, M. Sellers, F. Shen, S. B. Sneed, J. C. 
> Weaver, J. H. Wittke, T. W. Stafford, J. J. Donovan, S. Xie, J.  J. 
> Razink Jr., A. Stich, C. R. Kinzie, W. S. Wolbach, Discovery of 
> a nanodiamond-rich layer in the Greenland ice sheet. Journal 
> of Glaciology, v. 56, n 199, 749-759.
> 
> PDF file at :
> http://cci.siteturbine.com/facultystorm/profile/research/publication.php?publicationId=7406
> http://www.climatechange.umaine.edu/people/profile/andrei_kurbatov
> 
> Thus, the debate continues.
> 
> Yours,
> 
> Paul H.
> 
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