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(On the other hand, if you don't like puns, you might not.) So if you believe your assumptions, use good methods, what could go wrong?
Well, it turns out the problems with early carbon-14 were so severe, that many historians were on the verge of abandoning it.
The ring is thick when the winter is short, and thin when the winter is long.
This happens annually, and thus very thin annual layers are deposited. More snow is deposited in summer, when the air is wetter, than in winter.
Using tree rings, the calibration of carbon-14 has been extended back to ~4,760 B. Of course, they could all be wrong, but if enough independent studies agree with each other, then being wrong becomes a more remote possibility.
In addition to tree rings, scientists have looked at what are called lake varves in Northern Sweden.
When you have records dated by the scribes, as well as actual mummies and the carbon-14 dates are not off by hundreds of years but by thousands, you either have to throw away every historical record, or else there was a general failure with carbon-14 dating. Solar intensity, the earth's magnetism, and CO To "face up" to the absolute age problem, scientists devised calibration scales based on tree rings, lake varves, and ice cores.
Oak trees can live for 200-300 years, and they grow a new tree ring every year.