Magnetotelluric investigations along the URSEIS profile: first results

An interpretation of an E-W profile of 30 magnetotelluric field stations al ong the URSEIS transect is presented. The magnetotelluric instruments used covered a period range from 0.2 to approximately 500 s and thus enabled a r esolution of shallow and upper crustal structures. After decomposition of t he impedance tensor a 2D interpretation was performed. The model obtained b y a 2D inversion displays a conductive zone west of the Main Uralian Fault. It appears to be consistent with a tectonic division obtained by URSEIS se ismic studies.