radiocarbon dating

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radiocarbon dating

a technique for determining the age of organic materials, such as wood, based on their content of the radioisotope 14C acquired from the atmosphere when they formed part of a living plant. The 14C decays to the nitrogen isotope 14N with a half-life of 5730 years. Measurement of the amount of radioactive carbon remaining in the material thus gives an estimate of its age

radiocarbon dating

[¦rad·ē·ō′kär·bən ′dād·iŋ]
(nucleonics)
References in periodicals archive ?
Her findings are being hailed as the most significant since 1988, when scientists controversially carbon-dated the 14ft-long cloth to medieval times, more than 1,000 years after Jesus died.
If experts had carbon-dated the coating rather than the Shroud itsel this would blow a hole in their assertion that the Shroud was a medieval forgery.
MacPhee and his colleagues carbon-dated the fossil dung and bones of extinct sloths.
When they carbon-dated shells that lived in that old tidal zone, they determined that the shoreline was active about 17,500 years ago.
And fresh cuttings were identical to carbon-dated fossilised remains.
Only carbon-dated archaeological finds tell the Olmecs' story.
Rothwell and his colleagues carbon-dated the turbidite to a time near the end of the ice age, when so much water was locked up in glaciers that global sea levels lay 120 m lower than they do today