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The Feasibility of USD Method in Tracking Past Hydrogeochemical Changes in the Fennoscandian Shield

Published online by Cambridge University Press:  01 February 2011

Kari Rasilainen ,
Juhani Suksi ,
Timo Ruskeeniemi  and
Petteri Pitkänen
Kari Rasilainen
Affiliation:
VTT Processes, P.O. Box 1608, FIN-02044 VTT, Finland;
Juhani Suksi
Affiliation:
University of Helsinki, P.O. Box 55, FIN-00014 HY, Finland;
Timo Ruskeeniemi
Affiliation:
Geological Survey of Finland P.O. Box 96, FIN-02151 ESPOO, Finland;
Petteri Pitkänen
Affiliation:
VTT Building and Transport, P.O. Box 1800, FIN-02044 VTT, Finland
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Abstract

Uranium-series disequilibrium (USD) method is the only paleohydrogeological method that for the time scale relevant for performance assessments can detect and directly date past hydrogeochemical changes. Such changes cause U mobility which is seen as uranium-series disequilibrium. We have reviewed the method taking into account experimental and interpretation aspects and identified pros seem to outweigh identified cons. Reported USD studies in Finland and Sweden have earlier been mostly qualitative but a quantitative methodology has been developed for future studies.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 565
Copyright
Copyright © Materials Research Society 2004

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References

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