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This data release includes estimates of potassium (K), equivalent uranium (eU), and equivalent thorium (eTh) for the conterminous United States derived from the U.S. Geological Survey's national airborne radiometric data compilation (Duval and others, 2005). Airborne gamma ray spectrometry (AGRS) measures the gamma-rays that are emitted from naturally occurring radioactive isotopes found in rocks and soil, the most abundant of which are potassium (K40), uranium (U238), and thorium (Th232). Radiometric data can aid in exploration of critical mineral resources, including deposits of barium, fluorine, titanium, beryllium, niobium, rare-earth elements, and uranium. There is also growing interest in using radiometric...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Alabama, Arizona, Arkansas, California, Colorado, All tags...
Airborne magnetic gradiometry data are provided here as part of the data release, "Airborne magnetic and radiometric survey, Columbia, South Carolina and surrounds, 2020." This website includes the processed aeromagnetic data provided in an ascii .csv file and a geoTIFF image showing the magnetic field intensity. The contractor report is available on the parent page. These data were collected as part of a high-resolution airborne magnetic and radiometric survey over Columbia, South Carolina and the surrounding region immediately northwest of an airborne magnetic and radiometric survey collected near Charleston, South Carolina in 2019 (Shah, 2020). Goals included imaging heavy mineral sands containing titanium,...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Aiken County, Bamberg County, Barnwell County, Calhoun County, Clarendon County, All tags...
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This data release includes data collected from the Villa Grove helicopter magnetic survey in northern San Luis Valley and Poncha Pass region in south-central Colorado, USA. The survey area extends over the northern part of Great Sand Dunes National Park, Poncha Pass and vicinity, and into the southern end of the Upper Arkansas Valley. It includes the communities of Crestone, Villa Grove, Saguache, and Salida. Several U.S. Geological Survey programs (including the National Cooperative Geologic Mapping Program, Mineral Resources Program, and Geothermal Program), as well as the Colorado Geological Survey, funded the survey. The data are part of studies to help refine our knowledge in this area about the nature of aquifers,...
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Airborne radiometric flight and tie line data the includes estimated concentrations of potassium, thorium, and uranium and total count radioactivity are provided here in NetCDF (Network Common Data Form) format along with a GeoTIFF grid of a ternary K, U, Th grid. Along with the data provided on this child page, a report in PDF format by the airborne contractor that describes the technical details of the data collection, reduction and processing procedures and a zip file that contains the contractor's deliverable products (Geosoft databases and grids) for the magnetic and radiometric survey is available on the parent page (https://doi.org/10.5066/P9TK8KMM).
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Alexander County, Ballard County, Bollinger County, Cape Girardeau, Cape Girardeau County, All tags...
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This data release is a re-release of an airborne geophysical survey carried out for the United States Geological Survey (USGS) by Spectra Exploration Geoscience Corp., from November 2000 to February 2001. The purpose of this survey was to acquire high-resolution, high-sensitivity aeromagnetic data over an area in northeast and north-central North Dakota and assess the area for anomalies and magnetic features pertaining to the local geology. To achieve this purpose, the survey area was systematically traversed by an aircraft carrying geophysical instruments along parallel flight lines (traverses) spaced 0.25 miles (400 meters) apart in an east-west alignment. Tie lines were flown normal to the traverses spaced at...
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Airborne magnetic gradiometry data along the tie and flight lines are provided here in CSV (Comma Separated Value) format along with a GeoTIFF grid of the total magnetic intensity (TMI) in nanoTeslas. Along with the data provided on this child page, a report in PDF format by the airborne contractor that describes the technical details of the data collection, reduction and processing procedures and a zip file that contains the contractor's deliverable products (Geosoft databases and grids) for the magnetic and radiometric survey is available on the parent page (https://doi.org/10.5066/P9TK8KMM).
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Alexander County, Ballard County, Bollinger County, Cape Girardeau, Cape Girardeau County, All tags...
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These data have been temporarily taken down. Please contact Benjamin J Drenth (bdrenth@usgs.gov) for more information. This publication provides digital flight line data for a high-resolution magnetic survey over an area of the west-central Upper Peninsula of Michigan. The survey was flown in 2008 by Aeroquest under contract to Kennecott Eagle Minerals Company using a fixed-wing aircraft with a magnetometer mounted in a tail stinger. The USGS has obtained this 66,074 line km subset of the survey dataset for public release. Data were collected along north-south flight lines spaced 100 meters apart with east-west tie lines flown every 1000 meters. The nominal terrain clearance was 40 meters, although greater terrain...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, Raster, Shapefile; Tags: "Geophysics"], Earth Mapping Resources Initiative, EarthMRI, Fence River, Geology, Geophysics, and Geochemistry Science CenterGGGSC, All tags...
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Airborne radiometric data are provided here as part of the data release "Airborne magnetic and radiometric survey, Columbia, South Carolina and surrounds, 2020." This website includes the processed aeroradiometric data (gamma spectrometry for K, U and Th) provided in an ascii .csv file, spectral data in a binary netcdf file that can be read using the relevant Python libraries (see example included with this release), and a geoTIFF showing a ternary image of the K, Th, and U channels. The contractor report is available on the parent page. These data were collected as part of a high-resolution airborne magnetic and radiometric survey over Columbia, South Carolina and the surrounding region immediately northwest...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: Aiken County, Bamberg County, Barnwell County, Calhoun County, Clarendon County, All tags...
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Images here include: TotCount_UTM18N_NAD83 (GeoTiff, KMZ): Total count TotCount_Contour250CPS_UTM18N_NAD83 (GeoTiff, KMZ): Total count with 250 counts/sec contours TotalCount_Colorbar.png provides a colorbar key for the total count images. Ternary_K_U_Th_UTM18N (GeoTiff, KMZ): Ternary image showing relative values of K, eU, and eTh. Ternary_Key.png provides a color key for the ternary image. Images may be geo-registered using embedded projection information in both the tiff and kmz files. Each image is projected using UTM Zone 18N: Datum: NAD83 Base Latitude: 0.00 degrees Central Meridian: -75.00 degrees False Easting: 500,000 meters False Northing: 0 meters Scale factor at natural origin: 0.9996 Detailed...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster
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Images provided here include: MagAnom_UTM18N_NAD83 (GeoTiff, KMZ): Magnetic anomaly corrected for diurnal variations, IGRF removed, and leveled MagAnomContour50nT_UTM18N_NAD83 (GeoTiff, KMZ): Magnetic anomaly corrected for diurnal variations, IGRF removed, and leveled, 50 nT contours. MagAnomShaded_UTM18N_NAD83 (GeoTiff, KMZ): Shaded relief image of magnetic anomaly corrected for diurnal variations, IGRF removed, and leveled. Illumination is from the west. MagAnom_Colorbar.png provides a colorbar key for these magnetic anomaly images. Images may be geo-registered using embedded projection information in both the tiff and kmz files. Each image is projected using UTM Zone 18N: Datum: NAD83 Base Latitude: 0.00...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster
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This publication provides digital flight line data for a high-resolution magnetic survey over an area of the central Upper Peninsula of Michigan. The survey area lies approximately between the towns of Iron Mountain and Chatham. Data for this survey were collected by EON Geosciences under contract with the USGS using a fixed wing aircraft with a magnetometer mounted in the tail stinger. The survey operated out of the Sawyer International Airport near Marquette, Michigan, from June of 2018 to September of 2018. A total of 38,474 line km of data were collected. Data were collected along north-south flight lines spaced 150 meters apart with east-west tie lines flown every 1,500 meters. The nominal terrain clearance...
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Images provided here include: FAA_UTM18N_NAD83 (GeoTiff, KMZ): Free-air anomaly with a 1-km grid filter FAA_Cont1mGal_UTM18N_NAD83 (GeoTiff, KMZ): Free-air anomaly with a 1-km grid filter, 1 mGal contours FAA_Colorbar.png provides a colorbar key for these free-air anomaly images. BA_267_UTM18N_NAD83 (GeoTiff, KMZ): Bouguer anomaly derived from the free-air anomaly with a 1-km grid filter, assuming a uniform density of 2.67 g/m3 BA_267_Cont1mGal_UTM18N_NAD83 (GeoTiff, KMZ): Bouguer anomaly derived from the free-air anomaly with a 1-km grid filter, assuming a uniform density of 2.67 g/m3, 1 mGal contours BA_Colorbar.png provides a colorbar key for these Bouguer anomaly images. Images may be geo-registered...
Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster


    map background search result map search result map High Resolution Aeromagnetic Survey, Villa Grove, Colorado, USA, 2011 Bayesian modeling of NURE airborne radiometric data for the conterminous United States: predictions and grids Airborne magnetic survey, Iron Mountain-Chatham region, central Upper Peninsula, Michigan, 2018 Airborne magnetic survey over northeast North Dakota, 2000-2001 Airborne magnetic flight line data, Columbia, South Carolina and surrounds, 2020 Airborne radiometric flight line data, Columbia, South Carolina and surrounds, 2020 Airborne magnetic flight line data over parts of southeast Missouri, southern Illinois and western Kentucky - The Gap survey, 2021 Airborne radiometric flight line data over parts of southeast Missouri, southern Illinois and western Kentucky - The Gap survey, 2021 Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008 High Resolution Aeromagnetic Survey, Villa Grove, Colorado, USA, 2011 Airborne magnetic survey, Iron Mountain-Chatham region, central Upper Peninsula, Michigan, 2018 Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008 Airborne radiometric flight line data over parts of southeast Missouri, southern Illinois and western Kentucky - The Gap survey, 2021 Airborne magnetic flight line data over parts of southeast Missouri, southern Illinois and western Kentucky - The Gap survey, 2021 Airborne radiometric flight line data, Columbia, South Carolina and surrounds, 2020 Airborne magnetic survey over northeast North Dakota, 2000-2001 Airborne magnetic flight line data, Columbia, South Carolina and surrounds, 2020 Bayesian modeling of NURE airborne radiometric data for the conterminous United States: predictions and grids