[Carry_Okie]

Many thanks. Another piece in the puzzle. Looks like I am going to have to collect these papers and start a scatter plot of dates.

[blam]

"Many thanks. Another piece in the puzzle. Looks like I am going to have to collect these papers and start a scatter plot of dates."

Baillie says the significant dates that show up in the tree rings are: 3195BC, 2354BC, 1628BC, 1159BC, 540AD and two 'minor' events at 207BC and 44BC. All these events, except the 540AD one, are recorded in the ice core (acid layer=volcano) data. The lack of data (acid layer)for the 540AD event in the ice cores leads him to suspect a celestial connection.