Abstract

Magnetotelluric (MT) study is carried out across the NSL zone along a 190 km long N-S trending traverse extends from Balapur in the South to Andharwadi in the North. As a part of the study we have collected 14 magnetotelluric soundings and data were rotated to N700 E after removing the local distortions arising from the 3D galvanic effects using Groom- Bailey decomposition technique. Bostick 1-D (rotationally invariant) inversion has been carried out in order to add value to the 2-D inversion results. 2D inversion has been carried out by using NLCG scheme and the results are compared with seismic study. The derived results gave the thickness of the alluvial cover, trap, sediments and depth to the basement and its variation all along the traverse.