Uranium Resource Evaluation Lubbock Quadrangle Texas

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McGowen, J. H.
Seni, Steven J.
Anderson, R. L.
Thurwachter, J. E.

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Uranium resources of the Lubbock Quadrangle, Texas, were evaluated to a depth of 1500 m using available surface and subsurface geological information. Uranium occurrences reported in the literature and in reports of the Atomic Energy Commission were located, sampled, and described. Areas of anomalous radioactivity, interpreted from aerial radiometric survey, and geochemical anomalies, interpreted from hydrogeochemical and stream-sediment reconnaissance, were also investigated. Areas of uranium favorability in the subsurface were evaluated using gamma-ray well logs and driller's logs. Nine areas of uranium favorability were delineated within the quadrangle. Delineation was based on both surface and subsurface data. Several occurrences are present within some of these areas. Five subsurface areas are considered to be favorable for uranium deposits: one area in the San Angelo Formation (a delta system), three areas in the Dockum Group (consisting of fluvial, delta, and lacustrine systems), and one area in the Ogallala Formation (a wet alluvial fan system). Favorable areas in outcrop are lacustrine facies of the Tule Formation and fluvial-deltaic facies of the Dockum Group. Geologic units considered to be unfavorable include Recent and Pleistocene deposits that blanket the High Plains, parts of the Ogallala Formation, Cretaceous strata, parts of the Dockum Group, and most of the Permian units, except the deltaic deposits within the San Angelo Formation. Recommendations for improving the evaluation of the Lubbock Quadrangle include an aerial radiometric survey with more closely spaced flight lines, a detailed ground-water study, and a coring/logging program to document subsurface uranium occurrences.


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