Calculate age using radiocarbon dating

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Fluctuations in the amount of carbon dioxide in the atmosphere can also affect the concentration of . 2, which shows the increasingly large difference between radiocarbon and true age from 7000 to 15000 years BP.

This deviation is much smaller less than 7000 years ago.

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However, this inconsistency is corrected during calibration [the reason for using the (Willard F.) Libby half-life of 5568 years instead of the correct one of 5730 years has to do with the finding in about 1962 that the true half-life was 573030 years.

Accurate dating also had to wait for a good calibration of the radiocarbon time-scale in the 1960s, using an absolute chronology based on tree rings.

The radiocarbon time-scale has now been calibrated with tree rings to more than 10000 years before present, and beyond that using a coral chronology (Stuiver, et al., 1993).

About one carbon nucleus in a trillion contains two extra neutrons, giving a mass of 14.

This carbon-14 is radioactive and decays with a half-life of 5730 years.

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