Exploration of Fe-Ti-V oxides in an Orthomagmatic system using the Airborne Induced Polarization

It is nowadays accepted that the airborne electromagnetic (AEM) measurements are sensitive to Induced Polarization (IP) effects when collected over polarizable halfspaces. It has also been shown how using a frequency-dependent resistivity for the AEM modelling allows to properly retrieve the halfspace resistivity model as well as to map the airborne chargeability. With this work we propose a novel approach that points to actively use the airborne chargeability in the interpretation workflow and to the design a ground DCIP follow-up survey based on the airborne models. This approach aims to use the airborne chargeability as vector for the exploration to reduce costs and risks and to increase the targeting. To do this, we first define a novel modelling approach to extract the IP from AEM data reducing the equivalencies in the “IP-expanded” model space. Then, we integrate the obtained airborne resistivity and chargeability models with the ancillary information to design the ground DCIP follow-up. The ground IP modelling has been done using the same approach used for the AIP and consistent results has been obtained.