Abstract: From 1974 to 1980, the Federal Government systematically evaluated the uranium resources of the conterminous United States and Alaska. Earth science research in the National Uranium Resource Evaluation (NURE) program included hydrogeochemical and stream sediment sampling, coordinated rock sampling and analyses, airborne radiometric and magnetic surveys, geologic map compilation, ore deposit ... studies, subsurface geologic investigation, technology applications studies, development of resource estimation methodologies, and uranium resource evaluations incorporating research results.
Various techniques were used for data collection and analysis. Borehole geophysical measurements included borehole drift and diameter, spontaneous potential, resistance and resistivity, density, spectral and gross gamma count, porosity, and magnetic susceptibility. Geochemical analysis methods included delayed neutron counting, multichannel gamma spectrometry, neutron activation analysis, x-ray fluorescence, emission spectrometry, fluorescence spectrometry, mass spectrometry, atomic absorption, turbidimetry, and colorimetry.
The Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program (initiated in 1975) was one of nine components of NURE. Planned systematic sampling of the entire United States began in 1976 under the responsibility of four DOE national laboratories: Lawrence Livermore Laboratory (LLL), Los Alamos Scientific Laboratory (LASL), Oak Ridge Gaseous Diffusion Plant (ORGDP), and Savannah River Laboratory (SRL). Each DOE laboratory developed its own sample collection, analytical, and data management methodologies and hired contractors to do much of the actual work.
In 1977, the entire NURE program changed from a study area basis (State, County, or geomorphic provinces) to a 1° x 2° quadrangle basis. Many of the early study areas were not coincident with quadrangle boundaries and so additional sampling was done later to complete the quadrangle studies. Some quadrangles were never completed. Originally, all samples were only analyzed for uranium. Analyses for additional elements, other than uranium, were also authorized in 1977 and many - but not all - early samples were reanalyzed.
The NURE program effectively ended about 1983-84 when funding disappeared. Out of a total of 625 quadrangles that cover the entire lower 48 States and Alaska, only 307 quadrangles were completely sampled and another 86 quadrangles were partially sampled.
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Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) data for Alaska, formatted for GSSREARCH data base search software; 2, NURE HHSR data formatted as dBASE files for Alaska and the conterminous United States; 3, NURE HSSR data as originally compiled by the Department of Energy for Alaska and the conterminous United States on CD-ROM: ordering information
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Data Set Citation
U.S. Geological Survey
Reformatted Data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program
Dataset Series Name:
National Geochemical Database
Dataset Release Date:
Dataset Release Place:
Sioux Falls, South Dakota, USA
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