Geological conditions at Tembalang areas and its surround, Semarang, as a Undulating – Hillocky morphology. That’s can be represented lithological and structural conditions. This surveys used the Geoelectrical sounding and combined with geological surface mapping. There are 15 points sounding of Geoelectrical, after interpreted with geological surface mapping, can be conclusion the Breccias lithologic overlay on the upper of Limestones lithologic and finding the reverse fault in the part north of areas survey. Keywords :Geoelectrical, reverse faul
