National uranium resource evaluation, Cheyenne Quadrangle, Wyoming, Colorado, and Nebraska

Technical Report · Thu Apr 01 04:00:00 EST 1982

OSTI ID:5260979

Griffin, J R; Warner, Jr, A J

The Cheyenne Quadrangle, Wyoming, Colorado, and Nebraska, was evaluated for uranium favorability using National Uranium Resource Evaluation criteria. Examinations of surface exposures of known uranium occurrences, reconnaissance geochemical sampling, water sampling, and ground radiometric surveys were conducted. Anomalous areas recognized from airborne radiometric surveys were ground checked. Electric and gamma logs were used to determine subsurface structure, stratigraphy, lithology, and areas of anomalous radioactivity. Five areas were found favorable for uranium deposits in sandstone. The Lance Formation and Fox Hills Sandstone are favorable in the Goshen Hole, Pine Bluffs, and western Denver Basin. The Cloverly Formation is favorable in the southern Laramie Basin, and the Cloverly, Sundance, and Jelm are favorable in the northwest corner of the quadrangle. Precambrian granitic and metamorphic rocks of the Laramie and eastern Medicine Bow Ranges are unfavorable, as are Paleozoic formations, most Mesozoic units, and Tertiary post-Lance formations of the Denver and Laramie Basins. An area in the northern part of the Laramie Range was not evaluated.

• Research Organization: Bendix Field Engineering Corp., Grand Junction, CO (USA)
• DOE Contract Number: AC13-76GJ01664
• OSTI ID: 5260979
• Report Number(s): PGJ/F-115(82); ON: DE82014204
• Country of Publication: United States
• Language: English

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CHEMICAL ANALYSIS
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DATA
ELECTRIC LOGGING
ELEMENTS
EXPERIMENTAL DATA
EXPLORATION
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FEDERAL REGION VIII
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LITHOLOGY
MAPS
METALS
MINERAL RESOURCES
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RADIOACTIVITY LOGGING
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SURFACE WATERS
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WATER
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WYOMING