
%0 Journal Article
%A Austin, James 
%A Foss, Clive 
%T Rich, attractive and extremely dense: A geophysical review of Australian IOCGs
%J ASEG Extended Abstracts
%D 2012/04/01
%V 2012
%N 1
%P 1-4
%K 
%R https://doi.org/10.1071/ASEG2012AB278
%U https://www.publish.csiro.au/paper/ASEG2012AB278 
%X Most Iron Oxide Copper-Gold deposits were initially discovered through regional magnetic and gravity targeting, but there have been few published investigations of their geophysics as a deposit class. This study investigates the magnetic and gravity anomalies associated with several IOCGs and assesses their variability as a function of their physical characteristics. 3-D magnetic and gravity inversion and forward modelling are used to generate 3-D bodies, whose physical characteristics are then modified to assess the utility of magnetic and gravity data to IOCG exploration. The hypothesis that IOCGs form as fault and/or pipe bound hydrothermal breccias is consistent with their geophysical signatures. These modelling experiments highlight that gravity data is a more robust tool for IOCG exploration than magnetics, and that high resolution gravity data is critical to the identification of IOCG deposits in the Gawler and Mount Isa provinces. 
