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Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling.
Firestone RB, West A, Kennett JP, Becker L, Bunch TE, Revay ZS, Schultz PH, Belgya T, Kennett DJ, Erlandson JM, Dickenson OJ, Goodyear AC, Harris RS, Howard GA, Kloosterman JB, Lechler P, Mayewski PA, Montgomery J, Poreda R, Darrah T, Hee SS, Smith AR, Stich A, Topping W, Wittke JH, Wolbach WS. Firestone RB, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2007 Oct 9;104(41):16016-21. doi: 10.1073/pnas.0706977104. Epub 2007 Sep 27. Proc Natl Acad Sci U S A. 2007. PMID: 17901202 Free PMC article.
Nanodiamonds in the Younger Dryas boundary sediment layer.
Kennett DJ, Kennett JP, West A, Mercer C, Hee SS, Bement L, Bunch TE, Sellers M, Wolbach WS. Kennett DJ, et al. Among authors: west a. Science. 2009 Jan 2;323(5910):94. doi: 10.1126/science.1162819. Science. 2009. PMID: 19119227
Shock-synthesized hexagonal diamonds in Younger Dryas boundary sediments.
Kennett DJ, Kennett JP, West A, West GJ, Bunch TE, Culleton BJ, Erlandson JM, Que Hee SS, Johnson JR, Mercer C, Shen F, Sellers M, Stafford TW Jr, Stich A, Weaver JC, Wittke JH, Wolbach WS. Kennett DJ, et al. Among authors: west a, west gj. Proc Natl Acad Sci U S A. 2009 Aug 4;106(31):12623-8. doi: 10.1073/pnas.0906374106. Epub 2009 Jul 20. Proc Natl Acad Sci U S A. 2009. PMID: 19620728 Free PMC article.
Geochemical data reported by Paquay et al. do not refute Younger Dryas impact event.
Bunch TE, West A, Firestone RB, Kennett JP, Wittke JH, Kinzie CR, Wolbach WS. Bunch TE, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2010 Apr 13;107(15):E58; author repliy E59-60. doi: 10.1073/pnas.1001156107. Proc Natl Acad Sci U S A. 2010. PMID: 20388907 Free PMC article. No abstract available.
Confirmation of the Younger Dryas boundary (YDB) data at Murray Springs, AZ.
Firestone RB, West A, Bunch TE. Firestone RB, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2010 Jun 29;107(26):E105; author reply E106. doi: 10.1073/pnas.1003963107. Epub 2010 Jun 8. Proc Natl Acad Sci U S A. 2010. PMID: 20534437 Free PMC article. No abstract available.
Evidence from central Mexico supporting the Younger Dryas extraterrestrial impact hypothesis.
Israde-Alcántara I, Bischoff JL, Domínguez-Vázquez G, Li HC, DeCarli PS, Bunch TE, Wittke JH, Weaver JC, Firestone RB, West A, Kennett JP, Mercer C, Xie S, Richman EK, Kinzie CR, Wolbach WS. Israde-Alcántara I, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2012 Mar 27;109(13):E738-47. doi: 10.1073/pnas.1110614109. Epub 2012 Mar 5. Proc Natl Acad Sci U S A. 2012. PMID: 22392980 Free PMC article.
Very high-temperature impact melt products as evidence for cosmic airbursts and impacts 12,900 years ago.
Bunch TE, Hermes RE, Moore AM, Kennett DJ, Weaver JC, Wittke JH, DeCarli PS, Bischoff JL, Hillman GC, Howard GA, Kimbel DR, Kletetschka G, Lipo CP, Sakai S, Revay Z, West A, Firestone RB, Kennett JP. Bunch TE, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2012 Jul 10;109(28):E1903-12. doi: 10.1073/pnas.1204453109. Epub 2012 Jun 18. Proc Natl Acad Sci U S A. 2012. PMID: 22711809 Free PMC article.
Evidence for deposition of 10 million tonnes of impact spherules across four continents 12,800 y ago.
Wittke JH, Weaver JC, Bunch TE, Kennett JP, Kennett DJ, Moore AM, Hillman GC, Tankersley KB, Goodyear AC, Moore CR, Daniel IR Jr, Ray JH, Lopinot NH, Ferraro D, Israde-Alcántara I, Bischoff JL, DeCarli PS, Hermes RE, Kloosterman JB, Revay Z, Howard GA, Kimbel DR, Kletetschka G, Nabelek L, Lipo CP, Sakai S, West A, Firestone RB. Wittke JH, et al. Among authors: west a. Proc Natl Acad Sci U S A. 2013 Jun 4;110(23):E2088-97. doi: 10.1073/pnas.1301760110. Epub 2013 May 20. Proc Natl Acad Sci U S A. 2013. PMID: 23690611 Free PMC article.
1,819 results