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

From: Paul H. <oxytropidoceras_at_meteoritecentral.com>
Date: Fri, 3 Sep 2010 13:39:15 -0500
Message-ID: <20100903143915.VX1SB.1695019.imail_at_eastrmwml49>

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.
Received on Fri 03 Sep 2010 02:39:15 PM PDT