The 12.9-ka extraterrestrial impact hypothesis has been proposed as an explanation for Younger Dryas climate changes, terminal Pleistocene mammalian extinctions, and the supposed termination of the Clovis archaeological culture.
Sources
- The 12.9-ka ET Impact Hypothesis and North American Paleoindians (jstor.org)
- https://www.pnas.org/doi/10.1073/pnas.1200296109 (pnas.org)
- https://www.sciencedirect.com/science/article/abs/pii/S0012825211000262 (sciencedirect.com)
- https://journals.sagepub.com/doi/10.1177/00368504211064272 (journals.sagepub.com)
- https://arxiv.org/pdf/2109.15024 (arxiv.org)
- https://qmackie.com/2010/09/21/still-no-clovis-comet/ (qmackie.com)
- https://www.researchgate.net/publication/265132201_The_Younger_Dryas_impact_hypothesis_a_cosmic_catastrophe (researchgate.net)