Airborne radiometric survey over a part of the eastern Great Basin, Nevada, 2024-2025
Radiometric data collected as part of a high-resolution airborne magnetic and radiometric survey over eastern Nevada are provided here as flight line databases, grids, and imagery. The dataset was acquired as part of the USGS Earth Mapping Resource Initiative (Earth MRI) to improve our understanding of the fundamental geologic framework of the region with applications to evaluating natural resources and geologic hazards. Radiometric (or gamma-ray) surveys measure naturally occurring low-level gamma rays from the upper 0-0.5 m of the surface and use their energy spectra to estimate amounts of potassium, thorium, and uranium. The data were acquired and processed by New Resolution Geophysics (NRG) under contract to Woolpert and the USGS. The survey was flown from August 2024 to May 2025 by helicopter to best acquire data over areas with mountainous topography. Pre-planned flight lines were flown in an E-W direction with 200-m line spacing; N-S tie-lines were flown with 2000-m line spacing. The nominal flight height of 100 meters (m) above ground, with areas having higher population densities flown at a nominal height of 330 m above ground for safety reasons. A total of approximately 126,000 linear kilometers of data were collected covering an area that is 170 km E-W and 220 km N-S at its widest dimensions. Areas excluded from data collection are tribal lands and wilderness areas. Following acquisition, NRG also performed extensive post-processing of the data and delivered the final databases, grids, and images.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Geoffrey Phelps", "@type": "vcard:Contact", "hasEmail": "mailto:gphelps@usgs.gov" } |
| description | Radiometric data collected as part of a high-resolution airborne magnetic and radiometric survey over eastern Nevada are provided here as flight line databases, grids, and imagery. The dataset was acquired as part of the USGS Earth Mapping Resource Initiative (Earth MRI) to improve our understanding of the fundamental geologic framework of the region with applications to evaluating natural resources and geologic hazards. Radiometric (or gamma-ray) surveys measure naturally occurring low-level gamma rays from the upper 0-0.5 m of the surface and use their energy spectra to estimate amounts of potassium, thorium, and uranium. The data were acquired and processed by New Resolution Geophysics (NRG) under contract to Woolpert and the USGS. The survey was flown from August 2024 to May 2025 by helicopter to best acquire data over areas with mountainous topography. Pre-planned flight lines were flown in an E-W direction with 200-m line spacing; N-S tie-lines were flown with 2000-m line spacing. The nominal flight height of 100 meters (m) above ground, with areas having higher population densities flown at a nominal height of 330 m above ground for safety reasons. A total of approximately 126,000 linear kilometers of data were collected covering an area that is 170 km E-W and 220 km N-S at its widest dimensions. Areas excluded from data collection are tribal lands and wilderness areas. Following acquisition, NRG also performed extensive post-processing of the data and delivered the final databases, grids, and images. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P13VSMZ3", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.68c9d8a2d4be0274ff4beaa4.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_68c9d8a2d4be0274ff4beaa4 |
| keyword |
[ "Economic Geology", "Elko County", "Eureka County", "Geophysics", "Geospatial datasets", "Mineral Resources", "Nevada", "Nye County", "Potassium", "Sedimentology", "Structural Geology", "Thorium", "USGS:68c9d8a2d4be0274ff4beaa4", "United States", "Uranium", "geoscientificInformation" ] |
| modified | 2026-02-19T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -116.6000, 38.1500, -114.5000, 40.1500 |
| theme |
[ "geospatial" ] |
| title | Airborne radiometric survey over a part of the eastern Great Basin, Nevada, 2024-2025 |
