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Posted by / 29-Dec-2019 01:26

137cs dating

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The deterioration in the 137Cs peak has occurred due to radionuclide decay, 137Cs migration in situ, which is ubiquitous in this study, and 137Cs amendments from surface waters.

Less than 40% of 137Cs ages are consistent with 210Pb dating.

We provide a new measure of 137Cs peak clarity (t) for our core dataset by comparing the 50% interquartile range of data around the 137Cs peak for “ideal” cores profiles determined using 137Cs fallout data to that of observed core profiles.

9 mm/year), and overlies a significantly older unit (120 years old).

The dating control provided here by 210Pb and 137Cs dating corroborates the published interpretation of the trench stratigraphy, and refines the 14C-based estimated dates for the upper unit.

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The presence of 137Cs reliably indicates that deposition occurred after intensive above-ground nuclear testing was initiated around 1950.

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