Catastrophic Impact Events in the Late Pleistocene

  • New Insights Into Extraterrestrial Impacts, Younger Dryas Cooling, Mass Extinction, and the Clovis People
    AGU Joint Assembly, 22-25 May 2007, Acapulco, Mexico.
    Selected Posters and Abstracts

  • Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling
    R.B. Firestone, A. West, J.P. Kennett, L. Becker, T.E. Bunch, Zs. Revay, P.H. Schultz, T. Belgy, D.J. Kennett, J.M. Erlandson, O.J. Dickenson, A.C. Goodyear, R.S. Harris, G.A. Howard, J.B. Kloosterman, P. Lechler, P.A. Mayewski, J. Montgomery, R. Poreda, T. Darrah, S.S. Que Hee, A.R. Smith, A. Stich, W. Topping, J.H. Wittke, and W.S. Wolbach
    Proceedings of the National Academy of Sciences 104, pp 16016-16021 (2007)
    Abstract , Paper , Supporting information

  • Nanodiamonds in the Younger Dryas Boundary Sediment Layer
    D. J. Kennett, J. P. Kennett, A. West, C. Mercer, S. S. Que Hee, L. Bement, T. E. Bunch, M. Sellers, and W. S. Wolbach
    Abstract , Paper , Supporting information

  • Analysis of the Younger Dryas Impact Layer
    R.B. Firestone, A. West, Zs. Revay, J.T. Hagstrum, T. Belgya, S.S. Que Hee, and A.R. Smith
    Prosceedings of the International Conference "100 years since Tunguska phenomenon: Past, present and future", Moscow, 26-28 June 2008
    PDF

  • Micrometeorite Impacts in Beringian Mammoth Tusks and a Bison Skull
    J.T. Hagstrum, T. Belgya, R.B. Firestone, A. West, Z. Stefanka, and Z. Revay
    Prosceedings of the International Conference "100 years since Tunguska phenomenon: Past, present and future", Moscow, 26-28 June 2008
    PDF

  • Separation of YD event markers
    Description of the methodology used to extact the magnetic fraction, find magnetic microspherules, and extract carbon spherules, glass-like carbon and charcoal from sediment samples.

  • Geological Society of America Groundwork Debate

  • Micrometeorite Impacts in Beringian Mammoth Tusks and a Bison Skull
    Poster and Abstracts    , High-resolution images

  • Terrestrial Evidence of a Nuclear Catastrophe in Paleoindian Times
    R.B. Firestone and W. Topping, Mammoth Trumpet 16, pp 9-16 (2002)
    Paper , Supplemental information

  • Richard B. Firestone, e-mail: rbf@lbl.gov
     Ernest O. Lawrence Berkeley National Laboratory
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