![Nordic Stone Age / Astronomy / Nature / Blytt-Sernander / Palynology / Younger Dryas impact hypothesis / Younger Dryas / Impact event / Stone Age / Extinction events / Climate history Nordic Stone Age / Astronomy / Nature / Blytt-Sernander / Palynology / Younger Dryas impact hypothesis / Younger Dryas / Impact event / Stone Age / Extinction events / Climate history](https://www.pdfsearch.io/img/187ca617c368b8f8fa6d4a9f00161d6d.jpg)
| Document Date: 2015-03-03 10:56:40 Open Document File Size: 70,68 KBShare Result on Facebook
Continent North America / Europe / / Country United States / / Event Natural Disaster / / Facility square km / / Organization National Academy of Sciences / / Person David J. Meltzer / / PublishedMedium Proceedings of the National Academy of Sciences / / Region North America / South America / Middle East / / URL Phys.org / http /
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