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Hydrogeochemical and stream sediment reconnaissance basic data for Broken Bow NTMS Quadrangle, Nebraska

Technical Report ·
OSTI ID:6327416

Results of a reconnaissance geochemical survey of the Broken Bow Quadrangle, Nebraska, are reported. Statistical data and areal distributions for uranium and uranium-related variables are presented for 578 groundwater and 442 stream sediment samples. Also included is a brief discussion on location and geology. Groundwater data indicate that uranium concentrations above the 85th percentile occur primarily in the southeastern and central portion of the quadrangle. Isolated samples also occur in the eastern and southwestern portions. Water containing high concentrations of uranium are predominantly in the Pliocene Ogallala Formation. High uranium concentrations also are found in waters derived from the Niobrara Chalk and alluvial deposits. High uranium concentrations are associated with high values of specific conductance, boron, calcium, potassium, lithium, magnesium, sodium, strontium, and total alkalinity. Stream sediment data indicate that uranium concentrations above the 85th percentile occur in randomly scattered sediments, with no apparent trends visible. Sediments with high uranium values are derived primarily from glacial and alluvial deposits. Sediments with high U-FL values are associated with high values of chromium, lithium, iron, magnesium, scandium, yttrium, and zirconium. Sediments with high U-NT values are generally associated with high values of cerium, titanium, and zirconium.

Research Organization:
Oak Ridge Gaseous Diffusion Plant, TN (USA)
DOE Contract Number:
W-7405-ENG-26
OSTI ID:
6327416
Report Number(s):
GJBX-274-81; K/UR-26; ON: DE81030295
Country of Publication:
United States
Language:
English

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