See usoskin et al 2013 Astron. Astrophys., 55, L3, doi:10.1051/0004-6361/201321080, for the ice core stuff. There is elevated 10Be in the ice cores which forms coincident with radiocarbon During high energetic cosmic events. The amount found is in direct accord with the degree of measured radiocarbon excess, and is suggestive of a solar proton event or supernova.

Jonny

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



Edited 1 time(s). Last edit at 10/10/2014 06:03PM by JonnyMcA.