Real-time Ambient Seismic Noise Tomography of the Hillside IOCG Deposit

We use ambient noise tomography (ANT) to image the Hillside Iron-Ore-Copper-Gold (IOCG) deposit at prospect-scale, leveraging Fleet's direct-to-satellite technology for real-time data analysis. Our results capture aspects of the deposit's known geology, including depth of cover, structures linked to mineralisation, and the mineralised host rock, and identifies several new features, including the behavior of key structures down to 1 km depth and lithological variation that underlies the Hillside deposit. Results are compared to existing magnetic, gravity, induced-polarization and drilling data. An analysis of model convergence rates with respect to environmental noise conditions (signal-to-noise ratio) shows that real-time analysis can reduce data collection at the site to within 50% of traditional deployment times. We conclude by commenting on the efficacy of ANT for IOCG exploration more broadly.