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National uranium resource evaluation: Sheridan Quadrangle, Wyoming and Montana

Technical Report ·
DOI:https://doi.org/10.2172/5260859· OSTI ID:5260859

The Sheridan Quadrangle of north-central Wyoming was evaluated for uranium favorability according to specific criteria of the National Uranium Resource Evaluation program. Procedures consisted of geologic and radiometric surveys; rock, water, and sediment sampling; studying well logs; and reviewing the literature. Five favorable environments were identified. These include portions of Eocene Wasatch and Upper Cretaceous Lance sandstones of the Powder River Basin and Lower Cretaceous Pryor sandstones of the Bighorn Basin. Unfavorable environments include all Precambrian, Cambrian, Ordovician, Permian, Triassic, and Middle Jurassic rocks; the Cretaceous Thermopolis, Mowry, Cody, Meeteetse, and Bearpaw Formations; the Upper Jurassic Sundance and Morrison, the Cretaceous Frontier, Meseverde, Lance, and the Paleocene Fort Union and Eocene Willwood Formations of the Bighorn Basin; the Wasatch Formation of the Powder River Basin, excluding two favorable areas and all Oligocene and Miocene rocks. Remaining rocks are unevaluated.

Research Organization:
Bendix Field Engineering Corp., Grand Junction, CO (USA)
DOE Contract Number:
AC13-76GJ01664
OSTI ID:
5260859
Report Number(s):
PGJ/F-127(82); ON: DE82015183
Country of Publication:
United States
Language:
English