The researchers, including West, had taken a close look at about two dozen sites across North America showing a “boundary layer” of sediments dating to the onset of the Younger Dryas.

Looking for more clues, researchers have pored through the widely distributed Younger Dryas Boundary stratigraphic layer. That’s a distinctive layer of sediments laid down over a given period of ...

In a previous paper, Kennett and colleagues conclusively identified a thin layer called the Younger Dryas Boundary (YDB) that contains a rich assemblage of high-temperature spherules, melt-glass ...

Looking for more clues, researchers have pored through the widely distributed Younger Dryas Boundary stratigraphic layer. That’s a distinctive layer of sediments laid down over a given period of ...

The Younger Dryas Impact Hypothesis rests heavily on the claim that there is a Younger Dryas boundary layer at 29 sites in the Americas and elsewhere that contains deposits of supposed ...

"What we found—and this is what is characteristic of the impact layer, called the Younger Dryas Boundary—is that although we do occasionally see in the quartz grains examples of the ...

Looking for more clues, researchers have pored through the widely distributed Younger Dryas Boundary stratigraphic layer. That’s a distinctive layer of sediments laid down over a given period of ...

New evidence and support for a theory introduced in 2007 suggested a comet may have exploded over Canada 12,900 years ago (the Younger Dryas Boundary), killing off the Clovis people and large ...

During the Younger Dryas event, Skye would have been cut off from the rest of the world by the Scottish Highland ice cap, so ...