Release of uranium from rock matrix: A record of glacial meltwater intrusions?

Kari Rasilainen (Corresponding Author), Juhani Suksi, Timo Ruskeeniemi, Petteri Pitkänen, Antti Poteri

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    Uranium release observed in a rock matrix around water-carrying fractures was studied using U-series disequilibrium (USD) modelling and mass balance calculations. Several release scenarios were tested, with specific attention to the glacial aspects. The release appears to have occurred in two or three violent episodes during the last 300 ky. A release after the last glaciation can be excluded on mass flow grounds. Continuous release for more than 300 ky can be excluded on radioactive disequilibrium grounds. Repeated inflows of oxic glacial meltwater seem to have triggered the release episodes.
    Original languageEnglish
    Pages (from-to)235-246
    Number of pages12
    JournalJournal of Contaminant Hydrology
    Volume61
    Issue number1-4
    DOIs
    Publication statusPublished - 2003
    MoE publication typeA1 Journal article-refereed

    Keywords

    • uranium
    • uranium migration
    • U-series disequilibrium
    • glaciation
    • nuclear waste disposal
    • nuclear waste management

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