I don’t understand how a tree from 774 AD gives warning as one from 14,300 years ago. Also is there any evidense from Clovis material that the older event had human impact?
As will the Charlemagne event samples, beryllium-10 was found in the 14,300 year old tree ring.
Great question about how a 774 AD event is evidence for another apparently occurring 14,300 years ago. The article is not clearly written, but there seem to be two different trees and two different events involved:
“”. . . in 2012, Fusa Miyake discovered a sudden and unexpected spike in radiocarbon levels in a Japanese tree from 774 AD . . . Our storm is another Miyake event . . .”