14C, with a half-life of 5730 years, decays back to 14N …As long as the production rate remains constant, the radioactivity of natural carbon remains constant because [the] rate of production balances the rate of decay.For example, dating living mollusks by the carbon-14 method often yields clearly errant results—for instance, finding the mollusks to be up to 2,300 years old (“Radiocarbon Dating: Fictitious Results With Mollusk Shells,” , Vol. Archaeologist John Mc Ray notes: “Unfortunately, several recent discoveries combine to indicate that carbon 14 is not as valuable as was once hoped: (1) radioactive carbon atoms may not have existed in the earth’s atmosphere before 2000 B.C.; (2) the natural concentration of carbon 14 in the atmosphere has varied in certain periods, and (3) there is a high probability of sample contamination” ( , 1991, p. Recently a new method—accelerator mass spectrometry—has been used to date ancient items.
However, at death the balance is upset, because replenishment by life processes such as feeding, breathing and photosynthesis ceases.
They ignore evidence that does not fit their preconceived notion.
What would happen if a dinosaur bone were carbon dated?
This method has given a different date than previously accepted for the earliest Mayan civilization.
“The oldest known Maya turns out to be younger than archaeologists originally believed.