This report updates U.S. Geological Survey Open-File Report 77-780 by including new field data taken in July 1978. A revised geologic map is included, as are new geophysical data from an approximately 0.3-km by 0.5-km area just northeast of and adjoining the area surveyed earlier. The pattern which had been observed to the southwest of spatially coincident radiometric highs, magnetic highs, and resistivity lows deteriorates to the northeast: there the radiometric highs fall on magnetic lows and the correlation with resistivity lows disappears.