Radiocarbon dating and the prehistoric archaeology of china

28-Sep-2019 18:02

Modern carbon, on the other hand, makes the bone sample significantly younger than its true age.To prevent these inaccuracies, AMS labs perform pretreatment on all bone samples before subjecting them to AMS radiocarbon dating.Radiocarbon dating results on bones need not be subjected to an age offset but bone samples have time-width.Literature suggests that a bone does not cease to assimilate carbon from the biosphere until death; there is a turnover time of about 30 years for human bone and a shorter period for animal bone.

In general, infinite-age contaminants add considerable number of years to the true age of a bone sample, making it older than it is.These contaminants are considered natural because they came in contact with the bones due to natural occurrences.Artificial contaminants, on the other hand, are those that were introduced by man during the collection, conservation, or packaging of the bone samples.For most organisms that have bones, the time of their death is contemporaneous with their cessation of exchange with the biosphere.Hence, these organisms’ radiocarbon age at death is zero.

In general, infinite-age contaminants add considerable number of years to the true age of a bone sample, making it older than it is.These contaminants are considered natural because they came in contact with the bones due to natural occurrences.Artificial contaminants, on the other hand, are those that were introduced by man during the collection, conservation, or packaging of the bone samples.For most organisms that have bones, the time of their death is contemporaneous with their cessation of exchange with the biosphere.Hence, these organisms’ radiocarbon age at death is zero.Bones are one of the most common materials sent to accelerator mass spectrometry (AMS) labs for radiocarbon dating.