National Uranium Resource Evaluation: Challis Quadrangle, Idaho

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Description

From Introduction: "The Challis Quadrangle, in central Idaho between lat 44º and 45º N. and long 114º and 116º W. (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

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vii, 65 p. : ill. (1 folded), maps (20 folded) ; 28 cm.

Creation Information

Wopat, Michael A.; Siegmund, B. L. & Bernardi, M. L. July 1982.

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Description

From Introduction: "The Challis Quadrangle, in central Idaho between lat 44º and 45º N. and long 114º and 116º W. (Fig. 1), was evaluated to identify geologic environments and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits."

Physical Description

vii, 65 p. : ill. (1 folded), maps (20 folded) ; 28 cm.

Notes

Abstract: The geology of the Challis Quadrangle (1° x 2°), Idaho, was evaluated to identify environments and delineate areas favorable for the occurrence of uranium deposits. Determination of favorability was based upon criteria developed for the National Uranium Resource Evaluation program. Uranium occurrences were located, sampled, and described. The geology was reconnoitered, and reconnaissance geochemical samples were collected throughout the quadrangle. The geochemical samples, along with 594 samples collected by the U.S. Geological Survey during previous studies of parts of the quadrangle, were analyzed for uranium and other elements. Sites of some geochemistry anomalies indicated by the analyses were investigated and resampled. Selected examples of potentially favorable environments were examined in some detail. Results of the study show three environments to be favorable for uranium deposits. The basal sedimentary rocks of the Eocene Challis Volcanics are favorable for channel-controlled peneconcordant sandstone-type deposits in and near the Stanley uranium district and for non-marine carbonaceous shale deposits in the Ellis area. Rocks of the Cretaceous Idaho batholith in and near the Stanley uranium district are favorable for magmatic-hydrothermal deposits.

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  • OCLC: 981766482
  • SuDoc Number: E 1:28/PGJ/F-042(82)
  • Report No.: PGJ/F-042(82)
  • Archival Resource Key: ark:/67531/metadc957746

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Technical Report Archive and Image Library

The Technical Report Archive & Image Library (TRAIL) identifies, acquires, catalogs, digitizes and provides unrestricted access to U.S. government agency technical reports. The mission of TRAIL is to ensure preservation, discoverability, and persistent open access to government technical publications regardless of form or format.

Related Items

National Uranium Resource Evaluation: Challis Quadrangle, Idaho, Appendix A-F (Dataset)

National Uranium Resource Evaluation: Challis Quadrangle, Idaho, Appendix A-F

Appendices containing data on uranium availability and chemical analyses to accompany a report on U.S. uranium resources in the Challis Quadrangle, Idaho.

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National Uranium Resource Evaluation: Challis Quadrangle, Idaho, Appendix A-F, ark:/67531/metadc1228240

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  • July 1982

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Added to The UNT Digital Library

  • Oct. 25, 2017, 10:43 p.m.

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  • June 26, 2020, 3:42 p.m.

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  • N:45.0, E:-114.0, S: 44.0, W:-116.0

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Wopat, Michael A.; Siegmund, B. L. & Bernardi, M. L. National Uranium Resource Evaluation: Challis Quadrangle, Idaho, report, July 1982; (https://digital.library.unt.edu/ark:/67531/metadc957746/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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