Aerial gamma ray and magnetic survey: Idaho Project, Boise quadrangle, Oregon/Idaho. Final report

Technical Report · Mon Oct 01 00:00:00 EDT 1979

OSTI ID:5569395

The Boise quadrangle in southwestern Idaho and eastern Oregon lies at the juncture of the Snake River and Harney Plateaus and the Idaho Batholith. Cenozoic igneous rocks cover 90% of the surface of the quadrangle, but rocks of the Idaho Batholith dominate the Boise Mountains. Magnetic data apparently show contributions from both deep and shallow sources. The volcanics are relatively well defined, but deeper-lying structural boundaries are largely masked by the younger igneous rocks in the area. Some boundary faulting in the Snake River Plain appears to have some representation in the magnetics. The Boise quadrangle has been unproductive in terms of uranium mining. Some claims are present in Tertiary volcanics to the north and east of the quadrangle. A total of 163 groups of sample responses in the uranium window qualify as anomalies as defined in Volume I. These anomalies are largely scattered throughout the quadrangle. One large group is associated with the northern Snake River Plain. Some small groups are scattered throughout the Harney Plateau and the Boise Mountains.

• Research Organization: EG and G GeoMetrics, Sunnyvale, CA (USA)
• DOE Contract Number: EY-76-C-13-1664
• OSTI ID: 5569395
• Report Number(s): GJBX-10(80)(Vol.2)(Boise)
• Country of Publication: United States
• Language: English

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