A multisystem modeling approach for uranium-series dating

Kari Rasilainen, Juhani Suksi

    Research output: Contribution to journalArticleScientificpeer-review

    10 Citations (Scopus)

    Abstract

    The sensitivity of the dating of long-term uranium attachment to bedrock fractures was studied using radioactive dis-equilibria in the natural 238U decay chain. For this purpose, fracture coating samples were taken from the uranium deposit at Palmottu, Finland. A general simulation model was derived for the evolution of the 234U/238U and 230Th/234U disequilibria. Instantaneous, continuous, and multistage uranium accumulation modes were tested to see their effect on the model age. All accumulations produced different, but internally consistent, model ages, except the multistage scenario that yielded a nonunique dating. The simulation model and scenario technique provide a good modeling approach, and the real challenge in uranium-series dating appears to be the quantification of the accumulation rates.

    Original languageEnglish
    Pages (from-to)254 - 260
    Number of pages7
    JournalNuclear Technology
    Volume120
    Issue number3
    DOIs
    Publication statusPublished - 1997
    MoE publication typeA1 Journal article-refereed

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    Uranium
    Uranium deposits
    Coatings

    Cite this

    Rasilainen, Kari ; Suksi, Juhani. / A multisystem modeling approach for uranium-series dating. In: Nuclear Technology. 1997 ; Vol. 120, No. 3. pp. 254 - 260.
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    A multisystem modeling approach for uranium-series dating. / Rasilainen, Kari; Suksi, Juhani.

    In: Nuclear Technology, Vol. 120, No. 3, 1997, p. 254 - 260.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Suksi, Juhani

    PY - 1997

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    AB - The sensitivity of the dating of long-term uranium attachment to bedrock fractures was studied using radioactive dis-equilibria in the natural 238U decay chain. For this purpose, fracture coating samples were taken from the uranium deposit at Palmottu, Finland. A general simulation model was derived for the evolution of the 234U/238U and 230Th/234U disequilibria. Instantaneous, continuous, and multistage uranium accumulation modes were tested to see their effect on the model age. All accumulations produced different, but internally consistent, model ages, except the multistage scenario that yielded a nonunique dating. The simulation model and scenario technique provide a good modeling approach, and the real challenge in uranium-series dating appears to be the quantification of the accumulation rates.

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