Validity and accuracy of carbon dating 1 on 1 adult cam chat
Take the extinction of Neanderthals, which occurred in western Europe less than 30,000 years ago.Archaeologists vehemently disagree over the effects changing climate and competition from recently arriving humans had on the Neanderthals' demise.
Recall that atoms are the basic building blocks of matter.
An “isotope” is any of several different forms of an element, each having different numbers of neutrons.
The illustration below shows the three isotopes of carbon.
Organisms capture a certain amount of carbon-14 from the atmosphere when they are alive.
By measuring the ratio of the radio isotope to non-radioactive carbon, the amount of carbon-14 decay can be worked out, thereby giving an age for the specimen in question.
The problem, says Bronk Ramsey, is that tree rings provide a direct record that only goes as far back as about 14,000 years.