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    Radiocarbon Age Anomalies in Shell Carbonate of Land Snails from Semi-Arid Areas

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    Author
    Goodfriend, Glenn A.
    Issue Date
    1987-01-01
    Keywords
    Israel
    semi arid environment
    calcium carbonate
    Negev
    Trochoidea seetzeni
    Sphincterochila
    West Bank
    Middle East
    Holocene
    Asia
    Cenozoic
    Quaternary
    geochronology
    C 14
    carbon
    dates
    isotopes
    radioactive isotopes
    Invertebrata
    Mollusca
    absolute age
    Gastropoda
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    Citation
    Goodfriend, G. A. (1987). Radiocarbon age anomalies in shell carbonate of land snails from semi-arid areas. Radiocarbon, 29(2), 159-167.
    Publisher
    American Journal of Science
    Journal
    Radiocarbon
    URI
    http://hdl.handle.net/10150/653078
    DOI
    10.1017/S0033822200056915
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    Radiocarbon age anomalies, resulting from ingestion of old carbonate, were measured in shell carbonate of live-collected snails from arid and semi-arid areas of Israel and the West Bank. The age anomalies were found to be similar to those in land snails from other climatic regions and averaged ca 1600 yr in Trochoidea seetzeni, 2200 yr in Sphincterochila spp, 800 yr in Levantina sp, and 1700 yr in coastal dune species. The differences are associated with ecological differences among taxa. The uncertainties of the age anomalies average several hundred years within each group. This renders radiocarbon dates of late Holecene snails relatively imprecise, whereas it has almost no effect on the age uncertainties of relatively old samples (ie, those with large errors of measurement). Procedures for correction for fractionation are discussed.
    Type
    Article
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200056915
    Scopus Count
    Collections
    Radiocarbon, Volume 29, Number 2 (1987)

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