Vines 1 revisited: are older Neoproterozoic glacial deposits preserved in Western Australia?

P. W. Haines*, R. M. Hocking, K. Grey, M. K. Stevens

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    The stratigraphy in Vines 1, a 2017.5 m-deep cored stratigraphic hole drilled by the Geological Survey of Western Australia in 2001 near the Western Australian - South Australian border, has been reinterpreted with implications for the Neoproterozoic to Cambrian geological history of the Officer Basin. A previous interpretation considered the intersected succession as a conformable stratigraphic package, the Vines Formation. An assemblage of palynomorphs, found throughout the hole and previously used to infer an age of no older than earliest Cambrian, is now thought to consist of contaminants. An older assemblage, which is considered to be reworked and inherited from underlying rocks, provides a new maximum age constraint of mid-Neoproterozoic. Based on sedimentological interpretations and comparisons with other drillholes in the western Officer Basin, and the succession in the eastern Officer Basin, the Vines 1 succession is reinterpreted as four discrete sedimentary packages, the Pirrilyungka (new name), Wahlgu, Lungkarta and Vines (redefined) Formations, in ascending order. The Pirrilyungka and Wahlgu Formations include glacigenic sediments and may correlate with similar glacial successions in Supersequences 2 and 3 (mid to late Cryogenian) of the Centralian Superbasin, and the Sturt Tillite and Elatina Formation and their equivalents in the Adelaide Rift Complex of South Australia, respectively. The eolian Lungkarta Formation and fluvial Vines Formation are considered, on regional evidence, to be most likely of Ediacaran to earliest Cambrian age.

    Original languageEnglish
    Pages (from-to)397-406
    Number of pages10
    JournalAustralian Journal of Earth Sciences
    Volume55
    Issue number3
    DOIs
    Publication statusPublished - Jan 2008

    Keywords

    • Biostratigraphy
    • Glaciation
    • Lithostratigraphy
    • Lungkarta Formation
    • Neoproterozoic
    • Officer Basin
    • Pirrilyungka Formation
    • Vines 1
    • Vines Formation
    • Wahlgu Formation

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