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

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 r...

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Bibliographic Details
Published in:MRS Proceedings
Main Authors: Rasilainen, Kari, Suksi, Juhani, Ruskeeniemi, Timo, Pitkänen, Petteri
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2003
Subjects:
General Engineering
Fennoscandian
Online Access:http://dx.doi.org/10.1557/proc-807-565
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S1946427400108991
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Summary: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.

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