The Tennessee Division of Geology under contract to the Morgantown Energy Technology Center of the US Department of Energy has drilled eight NX coreholes in eastern Tennessee. The coring program was designed to retrieve continuous cores for a detailed study of the character of the Chattanooga Shale. The geophysical wire-line logging of the NX drill holes was performed by the US Geological Survey. The lithologic and wire-line log data in conjunction with two seismic surveys will be used to evaluate the hydrocarbon potential of the Chattanooga Shale in northeastern Tennessee. The purpose of this report is to present a detailed lithologic description and gamma-ray log of the Tennessee Division of Geology and US Department of Energy cored drill holes no. 4 and 5 (TDG-DOE no. 4 and no. 5). In spite of the overlap, no distinct marker beds were found to facilitate a positive correlation between the two cores. Reconstruction of the total Chattanooga section was based on detailed field mapping of the uppermost dark-gray shale below the base of the Grainger Formation and the projection of the beds. The total thickness of the Chattanooga Shale at the coring locations is estimated to be 1650 to 1700 ft.