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radiometric dating
(redirected from Radiodating)

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radiometric dating [‚rād·ē·ə‚me·trik ′dād·iŋ]
(archeology)
A dating method that utilizes the radioactive decay of certain long-lived, naturally occurring parent isotopes to stable daughter isotopes.
(nucleonics)
A technique for measuring the age of an object or sample of material by determining the ratio of the concentration of a radioisotope to that of a stable isotope in it; for example, the ratio of carbon-14 to carbon-12 reveals the approximate age of bones, pieces of wood, and other archeological specimens. Also known as isotopic age determination; nuclear age determination; radioactive age determination; radioactive dating; radiogenic age determination; radiogenic dating.
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In general, radiodating of the sediment in which a fossil is found is considered to be a good guide to when the creature died, its remains eventually becoming covered by soil or other debris.
Finder of key hominid fossil disputes 7-million-year dating by AFP / AFP Global Edition
 
 
 
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