Hydrogeochemical and Stream Sediment Reconnaissance basic data for Eau Claire NTMS Quadrangle, Wisconsin; Minnesota

Technical Report · Thu Jun 15 04:00:00 EDT 1978

OSTI ID:6942525

Results of a reconnaissance geochemical survey of the Eau Claire Quadrangle, Wisconsin/ Minnesota, are reported. Field and laboratory data are presented for 565 groundwater samples, 680 stream sediment samples, and 667 stream water samples. Statistical and areal distributions of uranium and other 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. Based on results from groundwater, stream sediment, and stream water samples, the most favorable area for uranium mineralization within the Eau Claire Quadrangle is located in the northeast corner of the quadrangle. This area is dominated by undifferentiated igneous and metamorphic rocks, Precambrian in age and felsic in composition. Another area delineated by results from groundwater and stream water data is located in the southwest corner of the quadrangle. The dominant geologic unit in the area is the Prairie du Chien Group which consists primarily of dolomite. The high values of uranium occurring in this area are attributed to the high dissolved solid content of the water due to the dissolution of the dolomite.

• Research Organization: Oak Ridge Gaseous Diffusion Plant, TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6942525
• Report Number(s): K/UR-103; GJBX-94(78)
• Country of Publication: United States
• Language: English

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