The discovery of Olympic Dam Cu-U-Au deposits in 1975 has subjected the entire Gawler Craton to serious scrutiny in search of similar deposits. Though potential methods routinely used for iron oxide copper gold (IOCG) exploration seems effective, they lack the needed resolution to detect deeper mineral deposits >500 m of sediment cover. Seismic method provides a distinct advantage over all other geophysical methods due to its great depth of penetration and superior spatial resolution. Despite these potentials, no arguments for seismic exploration at large scale have been proposed; because a cost-benefit analysis has never been conducted at such scale. In this study we analyse such a case by modelling 10 by 2 km Carrapateena IOCG deposit scenario where 2D seismic with relatively sparse source-receiver geometry is used to detect the presence of possible intrusive package. Interpreted results revealed that seismic reflection techniques could be an exploration tool for mapping deep seated IOCG even when hosted in very complex structures. The migrated section was not only able to identify and trace various layers as well as the complex structures but also shows reflections around the edges of intrusion. Thus, looking for such intrusive where there are possible fault pathways from depth, seismic methods should do well to warrant exploration confidence.
Cu-Au deposits, modelling, regolith cover, seismic method, source-receivers.