East Styx Geophysical Survey

The digital data below was produced from airborne geophysical surveys conducted in 2013 and 2014 for the Farewell survey area in the McGrath and Yentna mining districts, Talkeetna, Tyonek, McGrath, and Lime Hills quadrangles, south-central Alaska. Aeromagnetic, electromagnetic (EM), and radiometric data were acquired by helicopter for about 1060 sq miles. CGG's frequency-domain DIGHEM V system was used for the EM data. This dataset includes (1) raw and processed linedata; (2) gridded, Google Earth, and Geotiff formats of the calculated linedata; (3) maps of the data and flight lines; and (4) vector files of data contours and flight lines.

Available Data Metadata Overview
File Name Data File Format Download File Size
gpr2014-5_vectors-DXF Vector data Download 434.9 M
gpr2014-5_vectors-SHP Shapefile Download 369.6 M
gpr2014-5_maps-HPGL2_01A-7C Plot files Download 331.6 M
gpr2014-5_maps-HPGL2_08A-13C Plot files Download 203.8 M
gpr2014-5_maps-HPGL2_14A-21C Plot files Download 337.4 M
gpr2014-5_maps-HPGL2_22A-29C Plot files Download 362.2 M
gpr2014-5_mag-em-rad_linedata-XYZ Line data XYZ files Download 516.9 M
gpr2014-5_mag-em-rad_linedata-GDB Line data Geosoft format database Download 1022.0 M
gpr2014-5_grids-GRD Gridded data Geosoft format Download 308.2 M
gpr2014-5_grids-ERS Gridded data ER Mapper Download 308.3 M
gpr2014-5_geotiffs-and-kmzs Georeferenced raster files Download 589.4 M
gpr2014-5_maps-PDF_01A-7C Adobe PDF files Download 587.4 M
gpr2014-5_maps-PDF_08A-13C Adobe PDF files Download 364.1 M
gpr2014-5_maps-PDF_14A-21C Adobe PDF files Download 547.3 M
gpr2014-5_maps-PDF_22A-29C Adobe PDF files Download 607.8 M


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  • GPR 2014-5. East Styx survey area: Airborne magnetic, electromagnetic and radiometric data in line (point), grid, vector, and map formats, Talkeetna, Tyonek, McGrath, and Lime Hills quadrangles, south-central Alaska.