Journal article

Sedimentary and tectonic history of the Holowilena Ironstone, a Neoproterozoic iron formation in South Australia

Maxwell Alexander Lechte, Malcolm William Wallace

SEDIMENTARY GEOLOGY | ELSEVIER SCIENCE BV | Published : 2015

Abstract

The Holowilena Ironstone is a Neoproterozoic iron formation in South Australia associated with glacial deposits of the Sturtian glaciation. Through a comprehensive field study coupled with optical and scanning electron microscopy, X-ray fluorescence, and X-ray diffraction, a detailed description of the stratigraphy, sedimentology, mineralogy, and structure of the Holowilena Ironstone was obtained. The Holowilena Ironstone comprises ferruginous shales, siltstones, diamictites, and is largely made up of hematite and jasper, early diagenetic replacement minerals of precursor iron oxyhydroxides, and silica. These chemical precipitates are variably influenced by turbidites and debris flows contri..

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University of Melbourne Researchers