Tree rings from a beam found in Por-Bajin (IMAGE)

University of Groningen

Tree rings from a beam found in Por-Bajin

Caption

A microscope image of the outermost tree rings in a beam from Por-Bajin. For the last ring, the tree only formed early wood (darker bands; lighter bands are late wood). The carbon-14 spike was discovered in the 3rd ring from the bark.

Credit

Petra Doeve

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