Noun
a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon 14; believed to be reliable up to 40,000 years
Source: WordNetThe carbon-14 dating limit lies around 58,000 to 62,000 years. citation The rate of creation of carbon-14 appears to be roughly constant, as cross-checks of carbon-14 dating with other dating methods show it gives consistent results. Source: Internet