210Pb dating of lake sediments and ombrotrophic peats by gamma essay
作者： P.G. Appleby , P.J. Nolan , F. Oldfield , N. Richardson , S.R. Higgitt
DOI: 10.1016/0048-9697(88)90341-5
关键词: Ombrotrophic 、 Sediment 、 Lower energy 、 Geology 、 Ashing 、 Mineralogy 、 Germanium 、 Peat
摘要: 210Pb levels in lake sediments and ombrotrophic peats have been measured by gamma assay, using low background well-type planar Germanium detectors. The associated 226Ra concentrations emissions from 214Pb at 352 keV. A comparison of 137Cs 32 keV 662 keV, for samples radioactive equilibrium, indicates that self-absorption sediment does appear to be significant lower energy levels. Attenuation factors correct this determined. Results a number sites are presented. analysis peat has facilitated ashing material 450°C prior measurement.
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