Below is a recent paper that a direct connection with one line of evidence for the Younger Dryas Impact.
Roperch, P., Gattacceca, J., Valenzuela, M., Devouard, B., Lorand, J.P., Arriagada, C., Rochette, P., Latorre, C. and Beck, P., 2017. Surface vitrification caused by natural fires in Late Pleistocene wetlands of the Atacama Desert. Earth and Planetary Science Letters, 469, pp.15-26. http://www.sciencedirect.com/science/article/pii/S0012821X17301887 https://hal-insu.archives-ouvertes.fr/insu-01514600/ http://meetingorganizer.copernicus.org/EGU2017/EGU2017-8946.pdf Yours, Paul H. "The past is never dead. It's not even past." William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
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