Pb 210 dating

This study provides one test of that possibility by comparing recent measurements of Cs dating is used to confirm sediment accumulation rates in the recent cores.

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Evidence from some lakes suggests that this radionuclide may be adequately mobile to compromise dating reliability.There are additional benefits in terms of non destructive sample preparation and simultaneous assay for other environmentally significant gamma-emitting radioisotopes (e.g.We use a pair of Geranium Gamma Detectors to measure the levels of the Cs-137 and Pb-210 isotopes in cores.Sediment systems provide a natural storage system because Pb, Bi and Po are immobile or only mobilized together in these systems.In all but the top few cm of most sediment cores the sediment is old enough to ensure that the concentration of Pb-210 will be equivalent to that of the shorter-lived daughter isotopes.

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