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Typically (6): The above list is not exhaustive; most organic material is suitable so long as it is of sufficient age and has not mineralised - dinosaur bones are out as they no longer have any carbon left.
Stone and metal cannot be dated but pottery may be dated through surviving residue such as food particles or paint that uses organic material (8).
The most common form of carbon is carbon-12 which has 6 protons and 6 neutrons.(example excel file saved in CRLers folder) Dry, clean organic material in a vial ready to be sent to NOSAMS for analysis Sources: What is Carbon Dating?Our editors will review what you’ve submitted and determine whether to revise the article.Because carbon-14 decays at this constant rate, an estimate of the date at which an organism died can be made by measuring the amount of its residual radiocarbon. The method is widely used by Pleistocene geologists, anthropologists, archaeologists, and investigators in related fields.
date of organic material - but an approximate age, usually within a range of a few years either way.
NOSAMS returns results in a spreadsheet which shows the age of the sample and the amount of error.