Desperately seeking a cosmic catastrophe 12,900 B.P.
journal contribution
posted on 2024-11-14, 02:45 authored by Richard GillespieA catastrophic bolide impact at 12.9 ka has been proposed by Firestone and colleagues to explain Younger Dryas cooling and megafauna extinction in North America. Radiocarbon dating of carbon spherules supposedly formed during this ET event do not support the hypothesis.