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U.S. Department of Energy
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National Uranium Resource Evaluation: Lamar quadrangle, Colorado and Kansas

Technical Report ·
OSTI ID:5261745

Uranium resources of the Lamar Quadrangle, Colorado and Kansas, were evaluated using National Uranium Resource Evaluation criteria. The environment favorable for uranium is the Lower Cretaceous Dakota Sandstone in the area east of John Martin Reservoir for south Texas roll-type sandstone deposits. Carbonaceous trash and sulfides are abundant in the Dakota Sandstone. The unit underlies a thick Upper Cretaceous section that contains bentonitic beds and uraniferous marine black shale. Water samples from the Dakota Sandstone aquifer contain as much as 122 ppB U/sub 3/O/sub 8/. Geologic units considered unfavorable include most of the Paleozoic rocks, except in the Brandon Fault area; the Upper Cretaceous rocks; and the Ogallala Formation. The Dockum Group, Morrison Formation, and Lytle Member of the Purgatoire Formation are unevaluated because of lack of data.

Research Organization:
Bendix Field Engineering Corp., Grand Junction, CO (USA)
DOE Contract Number:
AC13-76GJ01664
OSTI ID:
5261745
Report Number(s):
GJQ-016(82); ON: DE82008699
Country of Publication:
United States
Language:
English