Hydrogeochemical and stream sediment reconnaissance basic data for Grand Forks NTMS Quadrangle, North Dakota; Minnesota

Results of a reconnaissance geochemical survey of the Grand Forks Quadrangle, North Dakota; Minnesota are reported. Field and laboratory data are presented for 585 groundwater and 201 stream sediment samples. Statistical and areal distributions of uranium and possible uranium-related variables are displayed. A generalized geologic map of the survey area is provided, and pertinent geologic factors which may be of significance in evaluating the potential for uranium mineralization are briefly discussed. Ground water data indicate that high uranium values occur almost exclusively in the western portion of the quadrangle along the eastern portion of the Williston Basin. These high uranium values occur primarily in Pleistocene delta deposits and in glacial outwash and till. Groundwater in this area is geographically associated with high values of calcium, magnesium, manganese, potassium, selenium, strontium, sulfate, and total alkalinity