Natural Resources

Open File Lab 1536 - Geophysical Series - Lake Ramusio and Lake Attikamagen Geophysical Surveys: Schefferville Region, Labrador and Québec (PARTS OF NTS MAP AREAS 13L, 13M, 23I, 23J, 23O AND 23P)

R. Dumont, R. Fortin, S. Heffort and F. Dostaler (Geological Survey of Canada)

A joint Open File release by the Geological Survey of Canada, the Geological Survey of Newfoundland and Labrador and the Direction Générale de géologie Québec.

This release comprises ten maps covering a portion of western Labrador, north of the Churchill Reservoir and adjoining parts of Québec. Results are presented as 1:250 000 scale full-coloured maps in pdf format. Eight of these are radiometric maps and the result of the new 2009 airborne survey.

PDF Note: all links below are PDFs and will open in a new window.

  1. Natural Air Absorbed Dose Rate (15.4 MB)
  2. Potassium (15.2 MB)
  3. Uranium (17.8 MB)
  4. Thorium (15 MB)
  5. Uranium/Thorium Ratio (18 MB)
  6. Uranium/Potassium Ratio (20.3 MB)
  7. Thorium/Potassium Ratio (20.4 MB)
  8. Ternary Radioelement Map (8.5 MB)

    An additional two maps include new data and previously released aeromagnetic results collected during an earlier phase of this geophysical program.

  9. Residual Total Magnetic Field (12 MB)
  10. First Vertical Derivative of the Magnetic Field (15 MB)

Download profile data and interpolated grids here: Natural Resources Canada - Geoscience Data Repository opens new window

This new survey was carried out under the Geomapping for Energy and Minerals (GEM) Program of the Earth Sciences Sector, Natural Resources Canada. The high-resolution survey, completed by the Geological Survey of Canada, fulfills part of a joint geoscience program with the Direction Générale de géologie Québec, ministère des Ressources naturalles et de la Faune du Québec and the Geological Survey Division, Newfoundland and Labrador Department of Natural Resources.

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