National uranium resource evaluation, Rapid City Quadrangle, South Dakota

Technical Report · Thu Apr 01 00:00:00 EST 1982

OSTI ID:5260882

Nanna, R F; Milton, E J

The Rapid City (1/sup 0/ x 2/sup 0/) Quadrangle, South Dakota, was evaluated for environments favorble for uranium deposits to a depth of 1500 m. Criteria used were those of the National Uranium Resource Evaluation. Field reconnaissance involved the use of hand-held scintillometers to investigate uranium occurrences reported in the literature and anomalies in aerial radiometric surveys, and geochemical samples of stream sediments and well waters. Gamma-ray logs were used to define the favorable environments in the subsurface. Environments favorable for sandstone-type uranium deposits occur in the Inyan Kara Group, the Fox Hills Sandstone, and the Hell Creek Formation. Environments considered unfavorable for uranium deposits include all Precambrian, Paleozoic, Mesozoic, and Tertiary rocks other than those identified as favorable.

• Research Organization: Bendix Field Engineering Corp., Grand Junction, CO (USA)
• DOE Contract Number: AC13-76GJ01664
• OSTI ID: 5260882
• Report Number(s): PGJ/F-125(82); ON: DE82014213; TRN: 82-012784
• Resource Relation: Other Information: Portions of document are illegible
• Country of Publication: United States
• Language: English

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