Bonnifield Mining District Geophysical Survey

The Bonnifield electromagnetic and magnetic airborne geophysical survey data were acquired in 2006 and 2007 with a DIGHEM-V Electromagnetic (EM) system and a cesium magnetometer. Aeromagnetic and electromagnetic data were acquired for 613 sq miles during the helicopter-based survey. These new data were combined with a geophysical survey of the Liberty Bell area released in 2002 by DGGS. The merged grids and maps are included in this dataset.

Available Data Metadata Overview
File Name Data File Format Download File Size
bonnifield-geophys-video-flightpath Video Order 20.5 G
bonnifield-geophys-vector-data Vector data Download 569.7 M
bonnifield-geophys-maps-prn-format Plot files Download 152.5 M
bonnifield-geophys-db-geosoft Line data Geosoft format database Download 276.3 M
bonnifield-geophys-grids-geosoft Gridded data Geosoft format Download 171.3 M
bonnifield-geophys-grids-ermapper Grid ERS files Download 132.2 M
bonnifield-geophys-kmz Google Earth files Download 701.0 K
bonnifield-geophysics-images Georeferenced raster files Download 106.4 M
bonnifield-geophys-documents Adobe PDF files Download 22.0 M
bonnifield-geophys-maps-pdf-format Adobe PDF files Download 138.8 M
bonnifield-geophys-profiles-stacked Adobe PDF files Download 148.6 M
bonnifield-geophys-ascii-data ASCII tabular files Download 601.8 M


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  • GPR 2016-1. Bonnifield mining district electromagnetic and magnetic airborne geophysical survey data compilation.
  • GPR 2007-1. Line, grid, and vector data, and plot files for the airborne geophysical survey of part of the Bonnifield mining district, interior Alaska. 1 DVD.