Hydrobiologia

, Volume 143, Issue 1, pp 21–27 | Cite as

210Pb dating by low background gamma counting

  • P. G. Appleby
  • P. J. Nolan
  • D. W. Gifford
  • M. J. Godfrey
  • F. Oldfield
  • N. J. Anderson
  • R. W. Battarbee
Article

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 measurements sediments 

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Copyright information

© Dr W. Junk Publishers 1986

Authors and Affiliations

  • P. G. Appleby
    • 1
  • P. J. Nolan
    • 1
  • D. W. Gifford
    • 2
  • M. J. Godfrey
    • 2
  • F. Oldfield
    • 3
  • N. J. Anderson
    • 4
  • R. W. Battarbee
    • 4
  1. 1.Department of Applied Mathematics & Theoretical PhysicsLondonEngland
  2. 2.Oliver Lodge Laboratory, Department of PhysicsLondonEngland
  3. 3.Department of GeographyUniversity of LiverpoolLiverpoolEngland
  4. 4.Palaeoecology Research Unit, Department of GeographyUniversity CollegeLondonEngland

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