Carbon-14 is not useful for dating fossils because quizlet
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Carbon 14 is useful for dating organic remains less than , years old. It is not useful for fossils as the vast majority are much older than that. Carbon is in all living things and decays after it dies. It has a long half life the time it takes for half a sample to decay into another element and gives a good estimate as to how old something is. Carbon dating is only effective up to an approximate age of 70, years, and is only useful in dating organic matter.
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Carbon, Radiometric Dating - CSI
Carbon has two stable isotopes, carbon and carbon There are also trace amounts of the unstable, radioactive isotope, carbon, with a half-life of years. Because half the amount of carbon in a sample is lost each years, the age of a carbonaceous sample can be estimated quite accurately by the remaining proportion of carbon Because the atmospheric production of of carbon could vary over time, scientists have calibrated carbon readings against calcium carbonate deposits, such as stalagmites, of known ages to ensure reliable estimates are possible over a wide range.
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