Carbon 14 dating process

15-Sep-2017 21:12

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As the Earth's upper atmosphere is bombarded by cosmic radiation, atmospheric nitrogen is broken down into an unstable isotope of carbon - carbon 14 (C-14).

The unstable isotope is brought to Earth by atmospheric activity, such as storms, and becomes fixed in the biosphere.

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Libby in 1949, and has become an indispensable part of the archaeologist's tool kit since.

As a result it is always undergoing natural radioactive decay while the abundances of the other isotopes are unchanged.

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