GSC Open File Release Notices

OPEN FILES 675 AND 676

National geochemical reconnaissance releases NGR 49-1979 and 50-1979; Regional lake sediment and water geochemical reconnaissance data, Ontario, Rainy Lake-Quetico area, a joint geological survey of Canada/Ontario Geological Survey Project NTS 52 B and C

          These files relate to data acquired, as part of the National Geochemical Reconnaissance Survey, according to specifications established for the Federal-Provincial Uranium Reconnaissance Program. Contract and technical support costs were financed by the Ontario Ministry of Natural Resources.

          The project was jointly planned by the Ontario Geological Survey and the Geological Survey of Canada. The contracts for field work, sample preparation and sample analysis were let, supervised and monitored by the Resource Geochemsitry Subdivision, Geological Survey of Canada.

          The 1979 survey covers approxiamtely 21 700 km ² (8400 mi ²) and an average sample density of one sample per 13 km ² (5 mi ²). Lake sediments were analyzed for U, Zn, Cu, Pb, Ni, Co, Ag, Mn, Fe, Mo, and As and loss-on-ignition to estimate organic carbon content. Lake waters were analyzed for U, F and pH.

          Each open file consists of 15 geochemical maps, sample location map and a text of field observations and analytical and statistical data. The total area is divided up into two open files.

          These files will be placed on Open File for inspection July 3, 1980 from 1300 h (and equivalent local times) at all Geolgoical Survey of Canada libraries, at the Ontario Ministry of Natural Resources, Ontario Geological Survey, Mines Library, 8th Floor, 77 Grenville Street, Toronto, Ontario and at the offices of the Regional Geologists in Thunder Bay and Kenora.

          A limited number of white prints and text will be available for sale at the Toronto Public Service Centre, 1st Floor, Whitney Block, Queen's Park, Toronto, Ontario and the offices of the Mining Recorder, Thunder Bay and Kenora. White print and text copies may also be obtained at the user's expense from Campbell Reproductions, 880 Wellington Street, Ottawa, Ontario, K1R 6K7. The field observations and analytical data in the text from which the maps were prepared are also available in a digital form at the user's expense from the Director, Computer Science Centre, 588 Booth Street, Ottawa, Ontario, K1A 0E4.