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Type: Book chapter
Title: The Elatina glaciation (late Cryogenian), South Australia
Author: Williams, G.
Gostin, V.
McKirdy, D.
Preiss, W.
Schmidt, P.
Citation: Memoir 36: The Geological Record of Neoproterozoic Glaciations, 2011 / Arnaud, E., Halverson, G., Shields Zhou, G. (ed./s), vol.36, pp.713-721
Publisher: Geological Society of London
Publisher Place: United Kingdom
Issue Date: 2011
Series/Report no.: Geological Society Memoir: No. 36
ISBN: 9781862393349
Editor: Arnaud, E.
Halverson, G.
Shields Zhou, G.
Statement of
George E. Williams, Victor A. Gostin, David M. McKirdy, Wolfgang V. Preiss and Phillip W. Schmidt
Abstract: Deposits of the late Cryogenian Elatina glaciation constitute the Yerelina Subgroup in the Adelaide Geosyncline region, South Australia. They have a maximum thickness of c. 1500 m, cover 200 000 km 2, and include the following facies: basal boulder diamictite with penetrative glaciotectonites affecting preglacial beds; widespread massive and stratified diamictites containing faceted and striated clasts, some derived from nearby emergent diapiric islands and others of extrabasinal provenance; laminated siltstone and mudstone with dropstones; tidalites and widespread glaciofluvial, deltaic to marine-shelf sandstones; a regolith of frost-shattered quartzite breccia up to 20 m thick that contains primary sand wedges 3+ m deep and other large-scale periglacial forms; and an aeolian sand sheet covering 25 000 km 2 and containing primary sand wedges near its base. These deposits mark a spectrum of settings ranging from permafrost regolith and periglacial aeolian on the cratonic platform (Stuart Shelf) in the present west, through glaciofluvial, marginal-marine and inner marine-shelf in the central parts of the Adelaide Geosyncline, to outer marine-shelf in sub-basins in the present SE and north. © The Geological Society of London 2011.
Rights: © The Geological Society of London 2011
DOI: 10.1144/M36.70
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