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References

1
RB Firestone, et al., Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and Younger Dryas cooling. Proc Natl Acad Sci USA 104, 16016–16021 (2007).
2
DJ Kennett, et al., Shock-synthesized hexagonal diamonds in Younger Dryas boundary sediments. Proc Natl Acad Sci USA 106, 12623–12628 (2009).
3
FS Paquay, et al., Absence of geochemical evidence for an impact event at the Bølling-Allerød/Younger Dryas transition. Proc Natl Acad Sci USA 106, 21505–21510 (2009).
4
M Sharma, C Chen, BP Jackson, W Abouchami, High resolution Osmium isotopes in deep-sea ferromanganese crusts reveal a large meteorite impact in the Central Pacific at 12 ± 4 ka (abstr PP33B–06). EOS Trans AGU 90, (Fall Meet Suppl). (2009).
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B Wen, J Zhao, T Li, Synthesis and crystal structure of n-diamond. Int Mater Rev 52, 131–151 (2007).

Information & Authors

Information

Published in

The cover image for PNAS Vol.107; No.15
Proceedings of the National Academy of Sciences
Vol. 107 | No. 15
April 13, 2010
PubMed: 20388907

Submission history

Published online: April 8, 2010
Published in issue: April 13, 2010

Authors

Affiliations

Ted E. Bunch1 [email protected]
Northern Arizona University, Flagstaff, AZ 86011;
Allen West
GeoScience Consulting, Dewey, AZ 86327;
Richard B. Firestone
Lawrence Berkeley National Laboratory, Berkeley CA 94720;
James P. Kennett
University of California, Santa Barbara, CA 93106; and
James H. Wittke
Northern Arizona University, Flagstaff, AZ 86011;
Charles R. Kinzie
DePaul University, Chicago, IL 60614
Wendy S. Wolbach
DePaul University, Chicago, IL 60614

Notes

1
To whom correspondence should be addressed. E-mail: [email protected].
Author contributions: T.E.B., A.W., R.B.F., J.P.K., J.H.W., C.R.K., and W.S.W. performed research; T.E.B., A.W., R.B.F., J.P.K., J.H.W., C.R.K., and W.S.W. analyzed data; and T.E.B., A.W., R.B.F., and J.P.K. wrote the paper.

Competing Interests

The authors declare no conflict of interest.

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    Geochemical data reported by Paquay et al. do not refute Younger Dryas impact event
    Proceedings of the National Academy of Sciences
    • Vol. 107
    • No. 15
    • pp. 6553-7113

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