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AIG South Australia Branch Technical Talk – March 2014
Presented by Claire Wade.
Talk Synopsis
“The Curnamona Province is located in eastern South Australia extending into New South Wales. Magmatism occurred periodically from the Late Palaeoproterozoic to the Cambro-Ordovician with the main periods of magmatism occurring at 1720–1700 Ma, 1685 Ma, 1600–1555 Ma, 830 Ma and 500–400 Ma.
Relationships between igneous rocks and mineralisation have been well established, particularly in South Australia with the most prominent period being the 1590 Ma event related to iron-oxide copper gold (IOCG) mineralisation and the Gawler Range Volcanics and Hiltaba Suite granites. Despite this, mineralisation is related to igneous rocks both older and younger than these Mesoproterozoic units in the Curnamona Province.
A range of mineralisation styles are related to igneous activity in the Curnamona Province which include Cu-Au, IOCG, uranium, Pb-Zn-Ag and a potential for porphyry-epithermal systems”.
About the Speaker
Claire completed BA/Bsc (Hons) at Monash University in 2005 on the source and origin of the lower Gawler Range Volcanics using geochemical constraints from mafic magmas.
She commenced her current position at the Geological Survey of South Australia in February 2006 mapping in the Curnamona Province Team. Claire mapped in Olary for about 3 years while also working on the Mesoproterozoic igneous rocks of the Curnamona Province. This work culminated with the definition of the Ninnerie Supersuite, a package of ~1600–1570 Ma volcanic and granitic rocks contemporaneous with the Gawler Range Volcanics and Hiltaba Suite granites in the Gawler Craton.
She spent two years working on an igneous geochemistry project of Archaean to Neoproterozoic volcanic and granitic rocks of the Curnamona Province, Gawler Craton, Musgrave Province and Adelaide Geosyncline. This project focused on assessing the geochemical evolution of Early Proterozoic Southern Australia through Sm-Nd isotopes with particular reference to mafic magmatism, reworking, implications for tectonic settings and their impact on major mineralisation events in South Australia.
In 2012 Claire moved onto the PORT AUGUSTA 250K map-sheet and also commenced a porphyry Cu potential in South Australia project, with a major focus on the continuum of IOCG-porphyry-epithermal systems related to the Gawler Range Volcanics.
Additional Notes
Due to strong arguments put forward for having our monthly meetings in the city, we have agreed to these requests and our meetings will now be held at the Wakefield Hotel in the city (76 Wakefield St). We will meet in the restaurant bar (not the public bar) at 6.30pm for complimentary pre-meeting drinks with the talk commencing at 7pm. For those wishing to stay, dinner will be at 8pm as per our normal routine. Parking should not be a problem in the city at this time of the day.
