Radiocarbon dating and the prehistoric archaeology of china

Limestone is of geological origin and will therefore be much older than any archaeological samples.The presence of humic and fulvic acids during AMS radiocarbon dating will lead to inaccurate results as well.

radiocarbon dating and the prehistoric archaeology of china-55

This process is doable in AMS dating labs because only small samples are required.

However, this process is costly and time consuming.

Bones are one of the most common materials sent to accelerator mass spectrometry (AMS) labs for radiocarbon dating.

This is because bones of animals or humans are often subjects of archaeological studies.

AMS lab results with this sample will be inaccurate.

Other potential contaminants that can be introduced to bone samples after excavation include biocides, polyvinyl acetate and polyethylene glycol (conservation chemicals), cigarette ash, and labels or wrappers that are made of paper.

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.

The effect of contamination on bone samples that were subjected to AMS dating is dependent on these factors: type of contaminant, degree of contamination, and the relative age of the bones and the contaminant.

If limestone has not been removed prior to AMS carbon dating, the radiocarbon age will be much older than the sample’s true age.

Modern sources of carbon can make the AMS carbon dating result of a bone younger than its true age.

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