(Phys.org) -- Evidence used to support a possible extraterrestrial impact event is likely the result of natural processes, according to a new collaborative study led by U.S. Geological Survey scientists.
Earth Sciences
Apr 23, 2012
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(Phys.org)—A team of researchers with the University of Connecticut, Harvard University and the Hebrew University in Israel has found that climate conditions in the southern Levant during the Younger Dryas were as cool ...
Shock-synthesized diamonds said to prove a catastrophic impact killed off North American megafauna can't be found.
Earth Sciences
Aug 30, 2010
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A new study published in The Journal of Geology provides support for the theory that a cosmic impact event over North America some 13,000 years ago caused a major period of climate change known as the Younger Dryas stadial, ...
Earth Sciences
Sep 11, 2014
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It all began innocently enough. Tyrone Daulton, a physicist with the Institute for Materials Science and Engineering at Washington University in St. Louis, was studying stardust, tiny specks of heat-resistant minerals thought ...
Earth Sciences
Dec 19, 2016
0
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A study published today in Nature Communications investigates how the strong cooling of the North Atlantic Ocean impacted the European climate around 12,000 years ago. The findings could help scientists predict how climate ...
Earth Sciences
Apr 24, 2018
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Though present before the Last Glacial Maximum (LGM, around 24,500–18,300 years ago), microblade technology is uncommon in the lithic assemblages of north-central China until the onset of the Younger Dryas (YD, around 12,900–11,600 ...
Archaeology
Jun 13, 2013
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Category 5 hurricanes may have slammed Florida repeatedly during the chilly Younger Dryas, 12,000 years ago. The cause? Hurricane-suppressing effects of cooler sea surface were out-weighed by side effects of slowed ocean ...
Earth Sciences
Oct 5, 2017
1
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Not long ago, geologically speaking, a now-vanished lake covered a huge expanse of today's Canadian prairie. As big as Hudson Bay, the lake was fed by melting glaciers as they receded at the end of the last ice age. At its ...
Earth Sciences
Oct 5, 2011
0
0
Two new studies in the Journal of Quaternary Science refute the hypothesis that one or more comets/bolides struck North America approximately 12,900 years ago triggering rapid climate change and the start of the Younger Dryas ...
Earth Sciences
Dec 19, 2016
1
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