Electromagnetic soundings in the Georgia Piedmont using ā horizontal loop source indicate an upper layer with conductivity variations from less than 2¿10-5 to 2.5¿10-4 S/m extending to about 15 km, underlain by a zone with conductivity of more than 10-3 S/m. At one site the conductance of any intermediate layer is limited to 2 S to a depth of 15 km. The conductivities of the upper layer agree with those expected from the surface geology, and the increase in conductivity occurs at a depth width correlates generally with reflection detected by the Consortium for Continental Reflection Profiling's seismic profile of the area. A possible source of the high conductivity is water saturated sediments trapped when the region was overthrust in the Appalachian orogeny.