Radiocarbon or C14 dating employs complex systems of measuring the unstable isotopes in once living matter.There are three forms of carbon that naturally occur forming the building blocks of all plant and animal life.The radiocarbon dating method is based on the fact that radiocarbon is constantly being created in the atmosphere by the interaction of cosmic rays with atmospheric nitrogen.
The resulting data, in the form of a calibration curve, is now used to convert a given measurement of radiocarbon in a sample into an estimate of the sample's calendar age.
Although different dating hypotheses have been suggested on the base of stylistic considerations, no conclusive answers are, so far, available.
The sample selection and preparation protocols of the different kind of organic materials (charred wood, vegetal remains and animal hairs) are described as well as the interpretation of the results in the frame of the current dating hypotheses and available analytical information about the casting technology.
These atoms rapidly decay into radiocarbon-dioxide and along with ordinary CO2 are absorbed by living plants.
As plants enter the human and animal food chains the C14 dioxide enters their living tissue.