Dalzell Creek (re-released with Farewell) Geophysical Survey

This dataset incorporates data from the previously published Dalzell Creek area into the linedata, grids, maps, and other derivative pieces of the Farewell survey area. The digital data below was produced from airborne geophysical surveys conducted in 2012 and 2013 for the Farewell survey area in the McGrath and Yentna mining districts, McGrath and Lime Hills quadrangles, south-central Alaska. Aeromagnetic, electromagnetic (EM), and radiometric data were acquired by helicopter for about 954 sq miles, which includes the 100 sq mile Dalzell Creek area previously released. CGG's frequency-domain DIGHEM V system was used for the EM data. The dataset includes (1) raw and processed linedata; (2) gridded, Google Earth, and GeoTIFF formats of the calculated linedata; (3) maps of the data; and (4) vector files of data contours and flight lines.

Available Data Metadata Overview
File Name Data File Format Download File Size
gpr2014-2_vectors-DXF Vector data Download 0.0 B
gpr2014-2_vectors-SHP Shapefile Download 324.2 M
gpr2014-2_maps-HPGL2_01A-13D Plot files Download 587.2 M
gpr2014-2_maps-HPGL2_14A-29D Plot files Download 681.6 M
gpr2014-2_EMandMAG_linedata-XYZ Line data XYZ files Download 370.9 M
gpr2014-2_rad_linedata-XYZ Line data XYZ files Download 116.9 M
gpr2014-2_EMandMAG_linedata-GDB Line data GDB files Download 716.1 M
gpr2014-2_rad_linedata-GDB Line data GDB files Download 530.7 M
gpr2014-2_grids-GRD Gridded data Geosoft format Download 301.6 M
gpr2014-2_grids-ERS Gridded data ER Mapper Download 301.6 M
gpr2014-2_kmz Google Earth files Download 426.9 M
gpr2014-2_geotiffs Georeferenced raster files Download 212.1 M
gpr2014-2_maps-PDF_01A-13D Adobe PDF files Download 887.6 M
gpr2014-2_maps-PDF_14A-21D Adobe PDF files Download 497.8 M
gpr2014-2_maps-PDF_22A-29D Adobe PDF files Download 549.2 M

Publications

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Geophysics

  • GPR 2014-2. Farewell survey area: Airborne magnetic, electromagnetic and radiometric data in line (point), grid, vector, and map formats, McGrath and Lime Hills quadrangles, south-central Alaska.
  • GPR 2013-3. Dalzell Creek survey area: Airborne magnetic, electromagnetic, and radiometric data in line (point), grid, vector, and map formats, McGrath Quadrangle, southcentral Alaska. The geophysical data for this publication is now available as part of the Farewell Survey