Revision of the stratigraphic nomenclature of the Cambrian Kanmantoo Group, South Australia

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Abstract
A new subdivision for the Cambrian Kanmantoo Group into a basal Carrickalinga Head Formation and overlying Inman Hill, Brown Hill and Wattaberri Subgroups is proposed for the type section. Investigations have shown that the stratigraphic subdivision formerly erected and utilized in the Nairne area is inappropriate when applied to the type section of the Kanmantoo Group. The Nairne Pyrite Member is correlated with part of the Talisker Calc-siltstone and does not occur in the type section of the Kanmantoo Group in the position as shown on recently published maps. We identify rocks in that position as belonging to the lower parts of the Brown Hill Sub-group which, in the Nairne-Callington region, are 3,000–4,000 m above the true Nairne Pyrite Member.

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