Holocene radiometric dating updating an oracle sequence nextval
At about 50 - 60 000 years, then, the limit of the technique is reached (beyond this time, other radiometric techniques must be used for dating).
By measuring the C14 concentration or residual radioactivity of a sample whose age is not known, it is possible to obtain the countrate or number of decay events per gram of Carbon.
The paper on radiometric dating is a chapter in a handbook of Holocene Palaeoecology and Palaeohydrology.
This chapter is part of a section on dating methods.
Thus, one carbon 14 atom exists in nature for every 1,000,000,000,000 C12 atoms in living material.