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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: goodyear ac. 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.
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: goodyear ac. 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.
Bayesian chronological analyses consistent with synchronous age of 12,835-12,735 Cal B.P. for Younger Dryas boundary on four continents.
Kennett JP, Kennett DJ, Culleton BJ, Aura Tortosa JE, Bischoff JL, Bunch TE, Daniel IR Jr, Erlandson JM, Ferraro D, Firestone RB, Goodyear AC, Israde-Alcántara I, Johnson JR, Jordá Pardo JF, Kimbel DR, LeCompte MA, Lopinot NH, Mahaney WC, Moore AM, Moore CR, Ray JH, Stafford TW Jr, Tankersley KB, Wittke JH, Wolbach WS, West A. Kennett JP, et al. Among authors: goodyear ac. Proc Natl Acad Sci U S A. 2015 Aug 11;112(32):E4344-53. doi: 10.1073/pnas.1507146112. Epub 2015 Jul 27. Proc Natl Acad Sci U S A. 2015. PMID: 26216981 Free PMC article.
Sediment Cores from White Pond, South Carolina, contain a Platinum Anomaly, Pyrogenic Carbon Peak, and Coprophilous Spore Decline at 12.8 ka.
Moore CR, Brooks MJ, Goodyear AC, Ferguson TA, Perrotti AG, Mitra S, Listecki AM, King BC, Mallinson DJ, Lane CS, Kapp JD, West A, Carlson DL, Wolbach WS, Them TR 2nd, Harris MS, Pyne-O'Donnell S. Moore CR, et al. Among authors: goodyear ac. Sci Rep. 2019 Oct 22;9(1):15121. doi: 10.1038/s41598-019-51552-8. Sci Rep. 2019. PMID: 31641142 Free PMC article.
Southeastern data inconsistent with Paleoindian demographic reconstruction.
Anderson DG, Meeks SC, Goodyear AC, Miller DS. Anderson DG, et al. Among authors: goodyear ac. Proc Natl Acad Sci U S A. 2008 Dec 16;105(50):E108; author reply E112-4. doi: 10.1073/pnas.0808964105. Epub 2008 Dec 10. Proc Natl Acad Sci U S A. 2008. PMID: 19073926 Free PMC article. No abstract available.