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- W2113539075 abstract "For aquatic sediments, the use of 210Pb originating from the decay of atmospheric 222Rn is a well-established methodology to estimate sediment ages and sedimentation rates. Traditionally, the measurement of 210Pb in soils and sediments involved laborious and time-consuming radiochemical separation procedures. Due to the recent development of advanced planar (‘n-type’) semi-conductors with high efficiencies in the low-energy range which enable the gamma-spectrometric analysis of the 46.5 keV decay line of 210Pb, sediment dating using this radionuclide has gained renewed interest. In this contribution, potentials and limitations of the 210Pb methodology and of the models used for estimating sediment ages and sedimentation rates are discussed and illustrated by examples of freshwater and marine sediments. Comparison with the use of 137Cs shows that the information which may be gained by these two tracers is complementary. As a consequence, both radionuclides should be used in combination for dating of recent sediments. It is shown that for various sedimentation regimes additional information from other sources (e.g. sediment lithology) may be needed to establish a reliable chronology. A strategy for sediment dating using 210Pb is recommended." @default.
- W2113539075 created "2016-06-24" @default.
- W2113539075 creator A5044651386 @default.
- W2113539075 date "2011-05-01" @default.
- W2113539075 modified "2023-10-16" @default.
- W2113539075 title "210Pb as a tool for establishing sediment chronologies: examples of potentials and limitations of conventional dating models" @default.
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- W2113539075 doi "https://doi.org/10.1016/j.jenvrad.2010.11.010" @default.
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