Abstract

The Godavari graben is one of the important geotectonic structures located between the Dharwar and Baster cratons, India. A seismic refraction/wide angle reflection study of 100 km length was carried out across this sedimentary basin. In the present study, we have selected 11 MT stations along the Kallur to Polavaram (E-W) deep seismic profile. The Magnetotelluric model of the sedimentary depth section of this profile is prepared using the resistivity values of sediments and crystalline basement. Forward modelling reveals that the apparent resistivity along the strike (Rhoxy), apparent resistivity across the strike (Rhoyx) and phase (?xy, ?yx) components overlap and represent one dimensional structure below initial 10km and 80-100km distance of the profile. There is no change in resistivity in horizontal direction in this area. Further at 10-20 km and 60-80 km distance, the Rhoxy curve is located below the Rhoyx curve.