: Distinctive carbon-rich soil layers found at numerous sites, which the authors believe represent the fallout from global wildfires and flooding. Scientific Reception
: A massive comet or fleet of comets struck or exploded over North America around 12,900 years ago, an occurrence the authors simply call "the Event". The Cycle of Cosmic Catastrophes: How a Stone-A...
: Discoveries of radioactive mammoth bones and magnetic microspherules in specific sediment layers. : Distinctive carbon-rich soil layers found at numerous
This book is available through various retailers, including Amazon , Barnes & Noble , and the publisher Inner Traditions . Go to product viewer dialog for this item. 900 years ago
: Puzzling elliptical depressions along the U.S. Atlantic coast that the authors link to the impact event.