Radiocarbon dating wood

The reasonableness of this assumption probably depends on the environment around the sample.A sample that is sealed from the surrounding environment is more likely to avoid contamination or loss than one in an open environment where materials may be carried into or out of the sample by water or simple diffusion.Int Cal09 and Marine09 radiocarbon age calibration curves, 0-50,000 years cal BP. [9] This was the scroll “Testament of Qahat,” for which the radiocarbon date was about two centuries older than the date based on paleography.

If these three conditions are met, the initial concentration of C in the sample can be estimated. It is known that such variations have occurred, but it is thought they can be corrected for by comparing a sample’s C level with the standard curve constructed using samples of known age.Another assumption is that the amounts of carbon-14 present in the geophysical reservoirs must be constant.Carbon-14 dates usually appear to be reasonably accurate whenever they can be checked against historical records.