Is carbon dating accuracy or not
These variations, or offsets, of up to 20 years in the calibration of precise radiocarbon dating could be related to climatic conditions.
Manning, professor of archaeology at Cornell University and director of the Cornell Tree-Ring Laboratory, is the lead author of "Fluctuating Radiocarbon Offsets Observed in the Southern Levant and Implications for Archaeological Chronology Debates," published in the Proceedings of the National Academy of Sciences.
After all, this what the archeologist guessed in their published books.
(2.) I just listened to a series of lectures on archaeology put out by John Hopkins Univ.So they tested some of the ring sequences by C14 to put the sequences in the 'right' order.Once they did that they developed the overall sequence.In fact, 14C is forming FASTER than the observed decay rate.This skews the 'real' answer to a much younger age.