Hydrobiologia

, Volume 143, Issue 1, pp 21–27

210Pb dating by low background gamma counting

Authors

  • P. G. Appleby
    • Department of Applied Mathematics & Theoretical Physics
  • P. J. Nolan
    • Department of Applied Mathematics & Theoretical Physics
  • D. W. Gifford
    • Oliver Lodge Laboratory, Department of Physics
  • M. J. Godfrey
    • Oliver Lodge Laboratory, Department of Physics
  • F. Oldfield
    • Department of GeographyUniversity of Liverpool
  • N. J. Anderson
    • Palaeoecology Research Unit, Department of GeographyUniversity College
  • R. W. Battarbee
    • Palaeoecology Research Unit, Department of GeographyUniversity College
Article

DOI: 10.1007/BF00026640

Cite this article as:
Appleby, P.G., Nolan, P.J., Gifford, D.W. et al. Hydrobiologia (1986) 143: 21. doi:10.1007/BF00026640

Abstract

Lead-210 and radium-226 measurements by direct gamma assay can now provide a record of changing concentrations in lake sediments sufficiently reliable and precise to form a suitable basis for age/depth and dry-sedimentation-rate calculations. There are additional benefits in terms of non destructive sample preparation and simultaneous assay for other environmentally significant gamma-emitting radioisotopes (e.g. 137Cs and 241Am). Results from L. Fleet, S. W. Scotland illustrate the value of this approach especially in lakes with disturbed catchments where variable input of supported 210Pb has occurred.

Keywords

210Pb and 226Ra measurementssediments

Copyright information

© Dr W. Junk Publishers 1986