Open File 002D/0956

Airborne Geophysical Survey of the Great Gull Lake Area, Newfoundland, Parts of NTS Map Areas 2D/03, 05, 06, 11 and 12

G.J. Kilfoil

St. John’s, Newfoundland, May, 2023

Open File 002D/0956 comprises the results from a recent high-resolution airborne magnetic and radiometric survey of the Great Gull Lake area, Newfoundland. The survey covers parts of NTS map areas 2D/03, 05, 06, 11 and 12. The release consists of 12 maps at a scale of 1:100 000. Results are presented as 4 magnetic and 8 radiometric maps in pdf format.

Magnetic Maps

  • Map 2023-02  Residual Magnetic Intensity (22 MB)
  • Map 2023-03  First Vertical Derivative of the Magnetic Field (21 MB)
  • Map 2023-04  Analytical Signal of the Magnetic Field  (21 MB)
  • Map 2023-05  Tilt Derivative of the Magnetic Field  (23 MB)

Radiometric Maps

  • Map 2023-06  Percent Potassium  (21 MB)
  • Map 2023-07  Equivalent Thorium  (22 MB)
  • Map 2023-08  Equivalent Uranium (22 MB)
  • Map 2023-09  Ratio of Equivalent Thorium to Percent Potassium (22 MB)
  • Map 2023-10  Ratio of Equivalent Uranium to Percent Potassium (21 MB)
  • Map 2023-11  Ratio of Equivalent Uranium to Equivalent Thorium  (21 MB)
  • Map 2023-12  Natural Air Absorbed Dose Rate  (21 MB)
  • Map 2023-13  Ternary Radioelement Image (22 MB)

Additional data will be available from the Geological Survey Division’s online Geoscience Atlas: Metadata Link

  • Airborne survey profile data
  • Interpolated grids
  • GIS layers and map images

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