Airborne geophysical survey: Ophir 1° x 3° Quadrangle

• Main Author: U.S. Department of Energy, U.S. Geological Survey, Department of Interior and the National Geophysical Data Center, NOAA
• Format: Dataset
• Language: unknown
• Published: USGS Science Data Catalog 2009
• Subjects: geophysical surveys; aeromagnetic data; airborne surveys; magnetic surveys; residual magnetic field; total field; magnetic; aeroradiometric surveys; radiometric surveys; radiometric; radioactivity; uranium; thorium; potassium; total count; geophysics; geospatial datasets; magnetic field (earth); aeromagnetic surveying; field monitoring stations; aeroradiometric surveying; United States; Alaska; AK; Ophir; f02290 = Yukon-Koyukuk; Quadrangle; Yukon
• Online Access: https://search.dataone.org/view/0707591d-8785-4510-90c7-89d12b006d3d

Aeromagnetic and aeroradiometric data were collected along flight lines by instruments in an aircraft that recorded magnetic-field and radiometric values and locations. The magnetic data set presents latitude, longitude, altitude, and magnetic-field values. Geologic symbols or codes are also included. The geologic symbols were picked from surficial geologic maps. The radiometric data set presents latitude, longitude, altitude, geologic symbols or codes, apparent Uranium (Bismuth 214), Thorium (Thallium 208), and Potassium (K 40), the element ratios, and ancillary information.