National Uranium Resource Evaluation: Eau Claire Quadrangle, Wisconsin and Minnesota

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Description

Purpose and scope: The Eau Claire Quadrangle, Wisconsin and Minnesota, was evaluated to identify geologic units and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. All geologic environments to a depth of 1500 m (5,000 ft) were evaluated by means of surface investigations and available subsurface data. Each environment was categorized as favorable, unfavorable, or unevaluated for uranium deposits based on recognition criteria contained in the study of significant uranium districts worldwide (Mickle and Mathews, eds., 1978). Evaluation of the Eau Claire Quadrangle was conducted by Golder Associates, Inc., under subcontract to Bendix Field Engineering Corporation ... continued below

Physical Description

34 p. : ill., maps, microfiche ; 28 cm.

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Delaney, H. J.; Fitzsimonds, M. R.; Bogart, L. E.; Silling, R. M. & Readdy, L. A. July 1982.

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Description

Purpose and scope: The Eau Claire Quadrangle, Wisconsin and Minnesota, was evaluated to identify geologic units and delineate areas that exhibit characteristics favorable for the occurrence of uranium deposits. All geologic environments to a depth of 1500 m (5,000 ft) were evaluated by means of surface investigations and available subsurface data. Each environment was categorized as favorable, unfavorable, or unevaluated for uranium deposits based on recognition criteria contained in the study of significant uranium districts worldwide (Mickle and Mathews, eds., 1978). Evaluation of the Eau Claire Quadrangle was conducted by Golder Associates, Inc., under subcontract to Bendix Field Engineering Corporation (BFEC), for the National Uranium Resource Evaluation (NURE) program, managed by the Grand Junction Office of the U.S. Department of Energy (DOE). The evaluation program began February 1, 1978, and ended February 1, 1980. Time spent by Golder personnel on literature search, field work, evaluation of data, and preparation of the final report totaled approximately 3.5 man-years.

Physical Description

34 p. : ill., maps, microfiche ; 28 cm.

Notes

Abstract: "The Eau Claire Quadrangle, Wisconsin and Minnesota, was evaluated to a depth of 1500 m to identify and delineate areas favorable for the occurrence of uranium deposits. The one uranium occurrence reported in the literature was located, described, and sampled. General geologic surface reconnaissance, ground radiometric measurements, and geochemical sampling were carried out in all geologic environments within the quadrangle. Aerial radiometric and hydrogeochemical and stream-sediment reconnaissance (HSSR) data were analyzed, and followup studies of anomalies were conducted. Potential environments were evaluated in the subsurface using descriptive logs of well sample cuttings. The results of this investigation suggested that there were no environments in Eau Claire Quadrangle that are definitely favorable for the occurrence of uranium deposits. Ten geologic environments have been identified as unfavorable. In the northeastern corner of the quadrangle, shear and fault zones characterized by mylonite cut Precambrian units. Detailed evaluation of these areas was precluded because of glacial cover and because of the lack of subsurface data defining the character of these structures at depth. They exhibited numerous favorable characteristics but required further subsurface evaluation to adequately determine their favorability" (p. 1).

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  • OCLC: 982119023 | External Link
  • SuDoc Number: E 1:28/PGJ/F-071(82)
  • Report No.: PGJ/F-071(82)
  • Grant Number: 78-113-S
  • Grant Number: DE-AC07-76GJ01664
  • Archival Resource Key: ark:/67531/metadc957775

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  • July 1982

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  • Oct. 8, 2017, 9:12 a.m.

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Delaney, H. J.; Fitzsimonds, M. R.; Bogart, L. E.; Silling, R. M. & Readdy, L. A. National Uranium Resource Evaluation: Eau Claire Quadrangle, Wisconsin and Minnesota, report, July 1982; Washington D.C.. (digital.library.unt.edu/ark:/67531/metadc957775/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.