f Geoelectrical methods in geological mapping - Case histories from the Balaton Highland, Hungary

Various geoelectrical measurements have been widely used for bauxite and coal prospecting in the Hungarian Transdanubian Central Range for decades. These mountain form a syncline structure, bauxite deposits can be found in their central part in tectonically preformed karstic depressions of resistive Mesozoic -mainly Upper Triassic- carbonates. Conductive Cenozoic formations including coal beds cover the bauxite lenses and the basement. This resistivity contrast and the approximately 1-D model allow to determine the depth to the basement and to distinguish the main structural units in the study area using geoelectrical methods.