ASGP (2003), vol. 73: 219-231

STRUCTURAL INTERPRETATION OF SEMI-DETAILED MAGNETOTELLURIC SURVEY IN KAMIENICA DOLNA-GOGOŁÓW AREA IN THE POLISH OUTER CARPATHIANS

Michał STEFANIUK (1,3) & Andrzej ŚLĄCZKA (2)

1) Department of General and Mathematical Geology, AGH University of Science and Technology, al. Mickiewicza 30, 30- 059 Kraków, e-mail: stefan at geolog.geol.agh.edu.pl
2) Institute of Geological Sciences, Jagiellonian University, ul. Oleandry 2a, 30-063 Kraków,e-mail: slaczka at geos.ing.uj.edu.pl
3) Geophysical Exploration Company, 03-301 Warszawa, ul. Jagiellońska 76

Stefaniuk, M. & Ślączka, A., 2003. Structural interpretation of semi-detailed magnetotelluric survey in Kamienica Dolna-Gogołów area in the Polish Outer Carpathians. Annales Societatis Geologorum Poloniae, 73: 219-231.

Abstract: Semi-detailed magnetotelluric sur vey was carried out in the area between Kamienica Dolna, Gogołów and Łopuchowa in the Polish Outer Carpathians. Magnetotelluric soundings were made along three lines located in a zone of the tectonic loop in the Carpathians' basement, which is reflected by the distribution of flysch outcrops. The sounding sites along profiles were ca 1.5 km apart. Magnetotelluric data were measured with the use of MT-1 system. To eliminate the effects of electromagnetic noise, the magnetic field remote reference was applied. Measurement data were processed using standard procedures of remote reference processing. Quantitative data interpretation was made with the use of 1D LSQ inversion. Initial geoelectric models were constructed basing on geological cross-sections obtained from surface and borehole data. 2D resistivity cross-sections, obtained from MT data interpretation, allowed the general structure of the flysch cover and its basement to be identified. Two major high-resistivity horizons were related to the top of Meso-Palaeozoic and Precambrian basement. A low- resistivity layer, related to the Lower Palaeozoic sediments, was interpreted.