New records of Late Neoproterozoic Acraman ejecta in the Officer Basin

A. C. Hill*, K. Grey, V. A. Gostin, L. J. Webster

*Corresponding author for this work

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    New occurrences of the Acraman impact ejecta layer were recently discovered in two drillholes, Giles 1 and Murnaroo 1, in the eastern Officer Basin, South Australia, using acritarch biostratigraphy and lithostratigraphy to predict the position. Fractured crystals were also observed in palynological preparations from drillhole SCYW 1a on the Stuart Shelf. These discoveries improve stratigraphic control of Late Neoproterozoic successions, especially in the eastern Officer Basin and will allow a test of the hypothesis that the Acraman impact event caused a global catastrophe.

    Original languageEnglish
    Pages (from-to)47-51
    Number of pages5
    JournalAustralian Journal of Earth Sciences
    Volume51
    Issue number1
    DOIs
    Publication statusPublished - Feb 2004

    Keywords

    • Acraman
    • Impact ejecta
    • Neoproterozoic
    • Officer Basin
    • Stuart Shelf

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