Study rebuts hypothesis that comets destroyed Clovis culturetags: pre-Columbian America, Clovis culture, impact events, climate science, ScienceDaily
Jan. 30, 2013 — Rebutting a speculative hypothesis that comet explosions changed Earth's climate sufficiently to end the Clovis culture in North America about 13,000 years ago, Sandia lead author Mark Boslough and researchers from 14 academic institutions assert that other explanations must be found for the apparent disappearance.
"There's no plausible mechanism to get airbursts over an entire continent," said Boslough, a physicist. "For this and other reasons, we conclude that the impact hypothesis is, unfortunately, bogus."
In a December 2012 American Geophysical Union monograph, first available in January, the researchers point out that no appropriately sized impact craters from that time period have been discovered, nor have any unambiguously "shocked" materials been found....
comments powered by Disqus
- How the Vikings Saved Europe and Got a Terrible Reputation
- Hard Hats On: Members of the Media Tour Exhibits under Construction at the National Museum of American History
- Shaman dancers, coolies and suffragettes: rare photos of 1900s Beijing discovered from Austrian archive
- England's King Richard III died painfully on battlefield
- 93-year-old former Auschwitz guard charged
- Pro-Israel groups going after federal support of Middle East Studies
- 100th Anniversary of Beard's 'An Economic Interpretation of the Constitution' commemorated
- University of Illinois Bigwig to Native American Studies scholar Jean O’Brien: Drop Dead
- 2 of 21 MacArthur Fellows for 2014 are historians
- Ken Burns electrifies Jon Stewart show