carbon dating

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Related to radiocarbon dating: Potassium argon dating

carbon dating

A radiometric dating method for determining the age of life forms which have died in the relatively recent past, having a limit of accuracy of about 60,000 years. Carbon dating is the result of cosmic radiation which bombards the Earth’s atmosphere, which constantly produces more 14C isotopes from 14N.

carbon dating

the dating of organic remains by measuring the radioactive carbon content. Atmospheric carbon dioxide contains carbon atoms of two types, ordinary carbon 12C and radioactive carbon 14C. Like other radioactive isotopes, 14C decays with age, so that the proportion of radioactive carbon present in, say, peat gives an indication of its age, assuming no more 14C has been incorporated in it since it was a live plant, and also that the amount of 14C in the atmosphere has remained constant. 14C has a HALF-LIFE of 5,570 years and one carbon atom in every million million in the atmosphere is radioactive. Dating organic remains by the use of 14C is a well-used and valuable technique, but not entirely accurate due to variations in atmospheric 14C over long periods of time. Comparisons with tree ring dates (see DENDROCHRONOLOGY have shown errors in the order of 900 years in 5,000.
References in periodicals archive ?
If we reduced fossil fuel emissions, it would be good news for radiocarbon dating," Graven said.
Christopher Bronk Ramsey, of Oxford University, who is also a part of the research team, added: "Having a truly terrestrial record gives us better resolution and confidence in radiocarbon dating.
By matching growth patterns, oak in this country can be dated accurately for over 5,000 years and the measurement of these pieces of wood used to calibrate the radiocarbon dating.
Times of glacier advance and retreat can be less precisely determined by radiocarbon dating in situ and detrital wood in glacier forefields or glacial deposits, and by measuring lichens and soils on moraines and other glacial landforms (Luckman, 1998; Larocque and Smith, 2003).
The possibility of radiocarbon dating would not have existed, had not [.
The subject of her winning essay was Willard Frank Libby, the 1960 Nobel Prize recipient honored for his radiocarbon dating of prehistoric objects.
Dr Horton said radiocarbon dating suggests the bones were buried about 2,000 years ago.
Gregor Mendel's pea plant experiments (these we did learn about in high school) showed us the mechanics of how traits are passed on to future generations; radiocarbon dating showed us that the earth is billions, not thousands, of years old, and cell history shows that gorillas, chimps and us have the kind of similarity in DNA that supports us having a common ancestor.
To satisfy any lingering doubts about the age, the coroner asked Chatters to order radiocarbon dating on a finger bone.
Among the 10 exhibits, visitors can explore multispectral imaging, learn about radiocarbon dating and get a first-hand idea of the daunting, puzzle-like task of sorting and fitting together thousands of tiny scroll fragments.
Experts will determine the exact age of the remains with radiocarbon dating.
Using radiocarbon dating, the researchers has calculated the age of relic moss samples that have been exposed by modern Arctic warming.