Natural Resources Canada

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the locations of glacial materials, circa mid-1950s. The extents of existing glaciers and ice caps are shown. The direction of ice movement is illustrated by denoting the trends of drumlins (elongated or oval hills...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the bedrock geology across Canada that was compiled by the Geological Survey of Canada, circa 1956. The map denotes the geological time periods and makeup of bedrock for the Canadian landmass. This map denotes the...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows 20 different maps of principal minerals across Canada, circa 1955. The maps were compiled from information supplied by the Mines Branch of the Department of Mines and Technical Surveys. Usually, the principal...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows maps of earthquakes, magnetism and tides across Canada. The two larger upper maps on this plate show geomagnetism. Since the North Magnetic Pole is in a different position from the Geographical North Pole, and...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows four maps, one for each of January, April, July and October showing mean sea-level pressure in millibars. These maps were prepared from atmospheric pressure readings taken daily at 00, 06, 12 and 18 hours G.M.T....

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate consisting of four maps, two showing wind and two showing sunshine. On the wind maps, the percentage frequency of the wind for winter and summer from each direction is represented by means of wind roses. Wind roses show...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows four maps of the mean daily temperatures for January, April, July and October averaged over the 30 year period, circa 1921-1950. The mean temperature for any day is the average of the maximum and minimum...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows six maps of the Canadian ranges in temperature. The map entitled Mean Annual Maximum Temperature shows the mean of the highest temperature recorded each year from 1921 to 1950 inclusive. The Mean Annual Minimum...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that consists of three maps based on the occurrence of a temperature of 32 degrees F (0 degrees C) or lower in a standard thermometer shelter at a level of four feet above the ground. Frost may occur at grass level when the...

Contained within the 3rd Edition (1957) of the Atlas of Canada is a plate that shows four maps of certain climatic aspects of the growing seasons. The first map shows the mean annual length of the growing season throughout Canada, assuming the growing season to be that part of the year when the...