A magnetotelluric (MT) survey was conducted on the eastern margin of the Recôncavo basin, state of Bahia (Brazil). Eleven stations were recorded along a pre-existent seismic line covering 500Hz-0.01 Hz frequency range. The profile cuts an area where the presence of conglomerates prevents better seismic and gravity resolution. By giving information on the conductivity values this MT survey could provide constrai11ts thatwould help reveal the true geological structure of the area. Pseudosections from apparent resistivity and phase values along with 1-0 Niblett- Bostick transformations clearly depict the major geological feature in the region- the Salvador Fault. Noise interference from cathodic protection on a nearby pipeline and clear surface distortions were observed. Therefore, further conclusions should not be made UDtil the data is refined.


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