New 14C Ages on Cellulose from Diprotodon gut contents: Explorations in Oxidisation Chemistry and Combustion

Richard Gillespie, Keith Fifield, Vladimir Alexander Levchenko, Roderick Wells

    Research output: Contribution to journalArticle

    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 chloritealkali-acid and measurement of the sometimes discarded 330 °C combustion fraction.
    Original languageEnglish
    Pages (from-to)75-81
    JournalRadiocarbon
    Volume50
    Issue number1
    Publication statusPublished - 2008

    Fingerprint Dive into the research topics of 'New 14C Ages on Cellulose from Diprotodon gut contents: Explorations in Oxidisation Chemistry and Combustion'. Together they form a unique fingerprint.

    Cite this