Aerial gamma ray and magnetic survey: Gillette Detail Project, Wyoming. Final report

Technical Report · Fri Jun 01 04:00:00 EDT 1979

OSTI ID:6117544

In the middle of August, 1978, geoMetrics, Inc., collected 810 lines miles of high sensitivity airborne radiometric and magnetic data (1/4 x 1/4 mile grid) in northeast Wyoming over a small section of the Black Hills. All radiometric and magnetic data were fully reduced and interpreted by geoMetrics and are presented as two volumes (Volume I and II) in this final report. Major geologic structures within this portion of the Black Hills Uplift are the Tertiary alkaline intrusives of the topographically dominant Bear Lodge Mountains. Economic mineral deposits are not presently known, but thorium prospects do exist in the intrusives. The data were examined for anomalous uranium values and mappable geochemical subunits using the radiometric and magnetic data. Three distinct subunits were derived based on the potassium and thorium windows. Fourteen (14) groups of uranium samples qualified as anomalies based on area wide statistics. Most anomalies are associated with the Tertiary intrusives.

• Research Organization: GeoMetrics, Inc., Sunnyvale, CA (USA)
• DOE Contract Number: EY-76-C-13-1664
• OSTI ID: 6117544
• Report Number(s): GJBX-112(79)(Vol.1)
• Country of Publication: United States
• Language: English

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