Carbon dating sample calculation

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Also, parts of a ring may be dead wood. In Boutton, Thomas W. The latter figures are significant because thorium-derived dates should be the more reliable, since thorium is less mobile than the uranium minerals that are the parents of the lead isotopes in lead-lead system.

As with beta counting, both blank samples and standard samples are used. This means that radiocarbon dates on wood samples can be older than the date at which the tree was felled.

Accuracy of Carbon 14 Dating I - For beta counters, a sample weighing at least 10 grams 0. How accurate are Carbon-14 and other radioactive dating methods?