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Part of the result of these collisions is the production of radiocarbon (C, pronounced "c fourteen"), carbon atoms which are chemically the same as stable carbon, but have two extra neutrons.Radiocarbon is not stable; over time radiocarbon atoms decay into nitrogen atoms.Samples can be taken from the deposits by means of a core or from individual layers at frequent intervals in a section face on an .

Interestingly these rings are more than a temperature indicator, they also tell the researcher about moisture and cloudiness as well.

Dating is a technique used in archeology to ascertain the age of artifacts, fossils and other items considered to be valuable by archeologists.

There are many methods employed by these scientists, interested in the old, to get to know the age of items.

It is possible to tell the number of years ago a particular rock or archeological site had been formed.

Two broad categories of classification methods are relative dating and absolute dating.

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