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    13C Variation in Limestone on an Aquifer-Wide Scale and Its Effects on Groundwater 14C Dating Models

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    Author
    Muller, A. B.
    Mayo, A. L.
    Issue Date
    1986-01-01
    Keywords
    Arizona
    surveys
    equations
    mathematical models
    ground water
    aquifers
    numerical analysis
    Carboniferous
    Mississippian
    Mooney Falls Member
    northern Arizona
    Paleozoic
    Redwall Limestone
    Holocene
    United States
    Cenozoic
    Quaternary
    geochronology
    C 14
    carbon
    dates
    isotopes
    radioactive isotopes
    C 13 C 12
    stable isotopes
    absolute age
    sedimentary rocks
    carbonate rocks
    limestone
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    Citation
    Muller, A. B., & Mayo, A. L. (1986). 13C variation in limestone on an aquifer-wide scale and its effects on groundwater 14C dating models. Radiocarbon, 28(3), 1041-1054.
    Publisher
    American Journal of Science
    Journal
    Radiocarbon
    URI
    http://hdl.handle.net/10150/652588
    DOI
    10.1017/S0033822200020099
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    In modeling the initial 14C activity of ground waters, the delta-13C of marine limestone is taken conventionally to vary little about 0 per mil PDB. This variation was found to be 6.28 per mil in samples taken over intervals from 10^-2 to 1^5 meters in the Mooney Falls Member of the Redwall Limestone in northern Arizona. Such a variation will cause appreciable variability in the results of all four initial activity models tested. The variability, due primarily to a numerical instability in the models dependent on this parameter, can introduce significant uncertainty into groundwater "age" calculations.
    Type
    Article
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200020099
    Scopus Count
    Collections
    Radiocarbon, Volume 28, Number 3 (1986)

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