Carbon 13 isotope dating
In addition, samples need to be thoroughly cleaned to remove carbon contamination from glues and soil before dating.This is particularly important for very old samples.In this way large domed tombs (known as tholos or beehive tombs) in Greece were thought to predate similar structures in the Scottish Island of Maeshowe.This supported the idea that the classical worlds of Greece and Rome were at the centre of all innovations.Some of the first radiocarbon dates produced showed that the Scottish tombs were thousands of years older than those in Greece.
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The calibrated date is our “best estimate” of the sample’s actual age, but we need to be able to return to old dates and recalibrate them because new research is continually used to update the calibration curve.
This method requires less than 1g of bone, but few countries can afford more than one or two AMSs, which cost more than A0,000.
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