Within the framework of the DFG-SPP SAMPLE project, key questions related to the observed magmatic activity, the pre- and post-breakup evolution of the passive continental margin are investigated using the magnetotelluric method. The magnetotelluric onshore data were acquired in Northern Namibia in October and November 2011, at 167 sites in a ~140 km wide and ~260 km long corridor, from the Atlantic Ocean across the main NNW striking Neoproterozoic shear zones and faults of the Kaoko Belt onto the Congo Craton. This onshore coverage is extended offshore by the Helmholtz Centre Kiel - GEOMAR along two transects, parallel and perpendicular, to the Walvis Ridge. Focus of the MT experiment is to gain a three dimensional image of electrical conductivity distribution below the passive continental margin in order to: * image the tectonic units in the investigated area; * assess the former and current magmatic activity at the passive margin; * investigate the influence of pre-existing structures on the breakup process