Two-Dimensional Forward Modeling of the NACP Anomaly (COPROD2R Data)

Abstract

A two-dimensional resistivity model was obtained for the COPROD2R data set by trial-and-error forward model fitting of the apparent resistivities and phases. Two major conductivity zones were found to explain the data in the zone where the NACP anomaly is located. The first one coincides with previous interpretations of the NACP anomaly, which results in four separate conductive bodies. The second is another deeper conductor, whose top is located at 26 km depth with its base deeper than 40 km. A test removing this deeper conductor was made in order to ensure its detectability.