URANIUM RESOURCES OF THE CEDAR MOUNTAIN AREA, EMERY COUNTY, UTAH. A REGIONAL SYNTHESIS
The results of field reconnaissance and office study of available data pertaining to the Cedar Mountain area, Emery County, Utah, are presented in this report, which is part of a series of reports synthesizing the geologic relations of uranium deposits in all stratigraphic units on the Colorado Plateau. Results suggest that the Chinle and Morrison formations and possibly the Cedar Mountain formation have further potential for sandstone-type uranium depesits in the area. Appraisals of unexposed units are based on the premise that primary sedimentary features are the major control of favorable ground, and geology and data on frequency of ore deposits are in part extrapolated from the San Rafael Swell to the Cedar Mountain area. If tectonic structral features such as the San Rafael Swell should be the major control, the uranium ore potential of the Cedar Mountain area may be considerably less than is suggested herein. The Monitor Butte member of the Chinle formation is considered generally favorable for uranium deposits in a broad northwestward-trending belt paralleling the line of pinchout of this member in the southern third of the Cedar Mountain area. The Moss Back member of the Chinle formation is thought to be generally favorable for uranium deposits over most of the southern third of the Cedar Mountain area. The Salt Wash member of the Morrison formation has been the source of about 90% of all uranium ore mined in the Cedar Mountain area but has not been found to contain deposits larger than a few hundred tons in size. Minor uranium occurrences also are known in the Brushy Basin member of the Morrison formation and in the upper shale member of the Cedar Mountain formation in the Cedar Mountain area. Uranium in these deposits's associated with carbonaceous material in siltstone or claystone, and ore grades are commonly submarginal. These units may, however, contain fairly large tonnages of lowgrade uranium-bearing rock. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-001707
- OSTI ID:
- 4236860
- Journal Information:
- U.S. Geol. Survey Bull., Journal Name: U.S. Geol. Survey Bull. Vol. Vol: 1087-B
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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