I was never convinced by the Impact origin for the excess radiocarbon.

A paper published in Nature Communications at the end of last month which reports isotopic analysis from ice cores that the origin of the event was most likely the intense solar storms, and not caused by an impact, supernova, or gamma ray burst.


The full paper can be read here [www.nature.com]

Jonny

The path to good scholarship is paved with imagined patterns. - David M Raup