GSC Open File Release Notices

124

The following item is being placed on Open File by the Geological Survey of Canada for inspection at its libraries at 601 Booth Street, Ottawa, Ontario, K1A 0E8; Institute of Sedimentary and Petroleum Geology, 3303-33 ^rd Street, Calgary, Alberta, T2L 2A7; The British Columbia Office, 6 ^th Floor Sun Building, 100 West Pender Street, Vancouver 3, British Columbia, and the office of the Resident Geologist, Department of Indian Affairs and Northern Development, Yellowknife, N.W.T.

Radioactivity maps and profiles from the GSC gamma-ray spectrometer system relating to the area north of Great Slave Lake on NTS map sheets 75L, 85I, and 85J, and the islands of the East Arm of Great Slave Lake.

It comprises profiles for 67 flight lines, reproduced at a scale of 1:500,000, and seven contoured maps showing different radiometric parameters reproduced at a scale of 1:250,000. Flight line spacing is 2.5 km; data were integrated over approximately 500 ft. sample lengths along the lines.

Blackline copies of the maps and the profiles may be obtained at the user’s expense by application to Campbell Reproductions Limited, 85 Sparks Street, Ottawa, Ontario.

 

{#791, January 1973 circular}