Carbon dating evolution

23-Apr-2020 12:41

Levels of carbon-14 become difficult to measure and compare after about 50,000 years (between 8 and 9 half lives; where 1% of the original carbon-14 would remain undecayed).

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Scientists now realize that production of carbon-14 has not been constant over the years, but has changed as the radiation from the sun has fluctuated.

These isotopes have longer half-lives and so are found in greater abundance in older fossils.