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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: becker l. 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.
Higher fullerenes in the Allende meteorite.
Becker L, Bunch TE, Allamandola LJ. Becker L, et al. Nature. 1999 Jul 15;400(6741):227-8. doi: 10.1038/22250. Nature. 1999. PMID: 10421363 No abstract available.
Fullerenes in Allende meteorite.
Becker L, Bada JL, Winans RE, Bunch TE. Becker L, et al. Nature. 1994 Dec 8;372(6506):507. doi: 10.1038/372507a0. Nature. 1994. PMID: 7990921 No abstract available.
2,241 results