Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland

Kari Rasilainen, Juhani Suksi

    Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

    Abstract

    Concentration distributions of natural decay chains 4n+2 and 4n+3 in crystalline rock intersected by a natural fracture were measured. Calcite coating on the same fracture surface was dated. Material properties of the rock matrix, and nuclide concentrations in groundwater were measured. The interpretation of the concentration distributions is based on the classical matrix diffusion concept. Although support was obtained, this calibration exercise does not yet validate the model. Besides initial and boundary conditions, matrix properties are uncertain due to the small amount of rock material. Experimental sorption data was not available, but its importance and the need for systematic studies was demonstrated.
    Original languageEnglish
    Title of host publicationThe Palmottu Analogue Project, Progress Report 1993
    Subtitle of host publicationThe behaviour of natural radionuclides in and around uranium deposits
    PublisherGeological Survey of Finland
    Pages77-87
    ISBN (Print)951-690-542-0
    Publication statusPublished - 1994
    MoE publication typeA3 Part of a book or another research book
    Event4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere - Charleston, United States
    Duration: 12 Dec 199317 Dec 1993

    Publication series

    SeriesGeologian tutkimuskeskus. Tutkimusraportti
    NumberGTK-YST-85
    ISSN0781-4240

    Conference

    Conference4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere
    CountryUnited States
    CityCharleston
    Period12/12/9317/12/93

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    Rasilainen, K., & Suksi, J. (1994). Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. In The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits (pp. 77-87). Geological Survey of Finland. Geologian tutkimuskeskus. Tutkimusraportti, No. GTK-YST-85