From abstract: This report is intended to supplement the brief interpretation of geochemical data presented in the "Hydrogeochemical and Stream Sediment Detailed Geochemical Survey for the Edgemont South Dakota; Wyoming" report (Butz, et al, 1980).

"Results of a reconnaissance geochemical survey of the O'neill Quadrangle are reported. Field and laboratory data are presented for 23 groundwater and 292 stream sediment samples. Statistical distributions and symbol plots for uranium and possible uranium-related variables are enclosed. A generalized geologic map and producing horizon map for the survey area are provided. Pertinent geologic factors that may be of significance in evaluating the potential for uranium mineralization are briefly discussed." (from Abstract)

This report provides the results of analyses of the airborne gamma radiation and total magnetic field survey flown for the Martin quadrangle in South Dakota.

Tables presenting well water, stream sediment, and field data for samples collected from a geochemical survey of the Milbank Quadrangle in Minnesota, North Dakota, and South Dakota.