Evidence for an extraterrestrial impact 12,900 years ago that contributed to the megafaunal extinctions and the Younger Dryas cooling

A carbon-rich black layer, dating to ≈12.9 ka, has been previously identified at ≈50 Clovis-age sites across North America and appears contemporaneous with the abrupt onset of Younger Dryas (YD) cooling. The in situ bones of extinct Pleistocene megafauna, along with Clovis tool assemblages, occur be...

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Autors principals: Firestone, R. B., West, A., Kennett, J. P., Becker, L., Bunch, T. E., Revay, Z. S., Schultz, P. H., Belgya, T., Kennett, D. J., Erlandson, J. M., Dickenson, O. J., Goodyear, A. C., Harris, R. S., Howard, G. A., Kloosterman, J. B., Lechler, P., Mayewski, P. A., Montgomery, J., Poreda, R., Darrah, T., Hee, S. S. Que, Smith, A. R., Stich, A., Topping, W., Wittke, J. H., Wolbach, W. S.
Format: Artigo
Idioma:Inglês
Publicat: National Academy of Sciences 2007
Matèries:
Physical Sciences
Accés en línia:https://ncbi.nlm.nih.gov/pmc/articles/PMC1994902/
https://ncbi.nlm.nih.gov/pubmed/17901202
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1073/pnas.0706977104
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