Radiocarbon is incorporated into all living organisms in proportion to its concentration in the environment.
When an organism dies, carbon is no longer incorporated into its tissues, but the radiocarbon present continues to decay at a known rate. The Pb-210 and Cs-137 datation service is also offered for sediments.
We are using the AMS method (Accelerator Mass Spectrometry). C-H-N analyses are also available now (possibility to get the percentages of C (Carbon), H (Hydrogen) and N (Nitrogen) for dry samples.
The analyses are processed with a Leco CHN628 elemental analyzer.
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That the Hudson's Bay Company, North West Company, XY Company, and other traders built about 60 forts to conduct trade for furs with First Nations people in Alberta during the 18th and 19th centuries?
However when they die the radiocarbon decays and is not replaced.
Since it decays at a known constant rate, the decreasing concentration of 14C can be measured and the date when the material died estimated.