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This data release provides digital flight line data for a high-resolution airborne radiometric survey over parts of Montana in the vicinity of the Boulder Batholith. The airborne survey was jointly funded by the Earth Mapping Resources Initiative and Kennecott Exploration Company. The survey was designed to meet complementary needs related to geologic mapping and characterization of mineral resource potential. A total of 34,041 line km of magnetic and radiometric data were acquired over an irregular-shaped area of 6178 km2. Data were collected from a helicopter flown at a nominal terrain clearance of 100 meters (m) above topography along E-W flight lines spaced at 200 m intervals. Tie lines were flown in an N-S...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: AASG, Aeroradiometric survey, Airborne geophysical survey, Association of State Geologists, Boulder Mountains, All tags...
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A mineral resource assessment was performed by the U.S. Geological Survey (USGS) to assess the potential of undiscovered skarn-hosted tungsten resources in the Northern Rocky Mountain region of eastern Idaho and western Montana. This region has seen moderate tungsten trioxide (WO3) production in the past from a variety of mineralization styles including skarn, vein and replacement, and wolframite-quartz veins. The geology of the area is dominated by large plutons of Cretaceous to Tertiary age, emplaced into a belt of sedimentary rock ranging from Mesoproterozoic to Permian age, and affected by tectonism related to the Sevier and later Laramide orogenies. Known tungsten (W) skarn mineral sites are associated with...
Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Ashton, Bald Mountain, Beaverhead County, Bitterroot Range, Boise County, All tags...
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This data release provides digital flight line data for a high-resolution airborne magnetic survey over parts of Montana in the vicinity of the Boulder Batholith. The airborne survey was jointly funded by the Earth Mapping Resources Initiative and Kennecott Exploration Company. The survey was designed to meet complementary needs related to geologic mapping and characterization of mineral resource potential. A total of 34,041-line km of magnetic and radiometric data were acquired over an irregular-shaped area of 6178 km2. Data were collected from a helicopter flown at a nominal terrain clearance of 100 meters (m) above topography along E-W flight lines spaced at 200 m intervals. Tie lines were flown in an N-S direction...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: AASG, Aeromagnetic survey, Airborne geophysical survey, Association of State Geologists, Boulder Mountains, All tags...


map background search result map search result map USGS 1:250000-scale Quadrangle for Helena, AR 1960 USGS 1:24000-scale Quadrangle for Helena, CA 1982 USGS 1:100000-scale Quadrangle for Helena, AR 1984 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, OK 1969 USGS 1:250000-scale Quadrangle for Helena, MT 1893 USGS 1:250000-scale Quadrangle for Helena, MT 1903 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:250000-scale Quadrangle for Helena, AR 1950 USGS 1:250000-scale Quadrangle for Helena, AR 1950 USGS 1:31680-scale Quadrangle for Helena, MI 1932 USGS 1:62500-scale Quadrangle for Helena, MT 1950 Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho Airborne magnetic survey, Boulder Batholith region, Montana, 2022 Airborne radiometric survey, Boulder Batholith region, Montana, 2022 USGS 1:24000-scale Quadrangle for Helena, CA 1982 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, AL 1959 USGS 1:24000-scale Quadrangle for Helena, OK 1969 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:24000-scale Quadrangle for Helena, TX 1960 USGS 1:31680-scale Quadrangle for Helena, MI 1932 USGS 1:62500-scale Quadrangle for Helena, MT 1950 USGS 1:100000-scale Quadrangle for Helena, AR 1984 Airborne magnetic survey, Boulder Batholith region, Montana, 2022 USGS 1:250000-scale Quadrangle for Helena, MT 1893 USGS 1:250000-scale Quadrangle for Helena, MT 1903 Airborne radiometric survey, Boulder Batholith region, Montana, 2022 USGS 1:250000-scale Quadrangle for Helena, AR 1960 USGS 1:250000-scale Quadrangle for Helena, AR 1950 USGS 1:250000-scale Quadrangle for Helena, AR 1950 Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho