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    Multiple Dating of a Long Flowstone Profile

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    Author
    Geyh, Mebus A.
    Hennig, G. J.
    Issue Date
    1986-01-01
    Keywords
    flowstones
    Heggen Cave
    West Germany
    Germany
    Holocene
    Central Europe
    Europe
    Cenozoic
    Quaternary
    geochronology
    C 14
    carbon
    dates
    isotopes
    radioactive isotopes
    absolute age
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    Citation
    Geyh, M. A., & Hennig, G. J. (1986). Multiple dating of a long flowstone profile. Radiocarbon, 28(2A), 503-509.
    Publisher
    American Journal of Science
    Journal
    Radiocarbon
    Description
    From the 12th International Radiocarbon Conference held in Trondheim, June 24-28, 1985.
    URI
    http://hdl.handle.net/10150/652743
    DOI
    10.1017/S0033822200007645
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Dense speleothem samples are considered as closed systems and are, therefore, possibilities for any dating method. Four dating methods (14C, U/Th, paleomagnetism, and electron spin resonance = ESR) were used for samples up to 1,000,000 yr old and taken along a vertical flowstone profile in the Heggen cave in West Germany. Also delta-18O and delta-13C analyses were carried out. The reliability of the results of each method is dependent on the diagenetic processes that took place during the complex growth history of the flowstone. Speleothem growth was interrupted during glacial periods. During interglacial periods, at least the stalagmite growth rate was greater by one order of magnitude than during interstadial periods. During the periods of low interstadial growth rate various processes might have changed the 14C, 18O, and 13C concentrations, leaching might have removed uranium, recrystallization might have moved thorium several centimeters, and increased content of radon in the cave might have exaggerated the accumulated dose (AD) at the speleothem surface. As a result, 14C ages may be too small and U/Th as well as ESR data may be too large.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200007645
    Scopus Count
    Collections
    Radiocarbon, Volume 28, Number 2A (1986)

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