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    New 14C Ages on Cellulose from Diprotodon Gut Contents: Explorations in Oxidation Chemistry and Combustion

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    Author
    Gillespie, Richard
    Fifield, L. Keith
    Levchenko, Vladimir
    Wells, Rod
    Issue Date
    2008-01-01
    
    Metadata
    Show full item record
    Citation
    Gillespie, R., Fifield, L. K., Levchenko, V., & Wells, R. (2008). New 14C ages on cellulose from Diprotodon gut contents: Explorations in oxidation chemistry and combustion. Radiocarbon, 50(1), 75-81.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    URI
    http://hdl.handle.net/10150/653940
    DOI
    10.1017/S003382220004337X
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    We report radiocarbon ages on cellulose isolated from the gut contents of a Diprotodon found at Lake Callabonna, South Australia. The maximum age obtained corresponds to a minimum age of 53,400 BP for this extinct giant marsupial. This is older than, and hence consistent with, the generally accepted Australian megafauna extinction window. We argue that dichromate and other strong oxidants are less selective than chlorite for lignin destruction in wood, and our results suggest that ages approaching laboratory background can be obtained using a repeated pretreatment sequence of chlorite-alkali-acid and measurement of the sometimes discarded 330 C combustion fraction.
    Type
    Article
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S003382220004337X
    Scopus Count
    Collections
    Radiocarbon, Volume 50, Number 1 (2008)

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