Magnetotelluric imaging across the tectonic structures in the eastern segment of the Central Indian Tectonic Zone: Preserved imprints of polyphase tectonics and evidence for suture status of the Tan Shear

•MT resistivity structure across the hitherto least studied eastern segment of Proterozoic CITZ.•North dipping crustal conductive horizon beneath Tan Shear suggests suture signature.•NSL shows conductive mid-lower crust due to magma plumbing during the Deccan volcanism.•Resistivity section indicates polyphase tectonics, from Proterozoic to Tertiary, in the mega lineament zone.