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|Title:||The Elatina glaciation (late Cryogenian), South Australia|
|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|
|Series/Report no.:||Geological Society Memoir: No. 36|
Shields Zhou, G.
|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|
|Appears in Collections:||Aurora harvest 5|
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