Lake Sediment: A Medium for Regional Geochemical Exploration of the Canadian Shield
R. J. ALLAN, Geochemist, Geological Survey of Canada, Ottawa, Ont.
CANADA HAS A GREATER LAKE AREA than any other country. Discountin the Great Lakes, this fresh-water area, mainly in the Canadian Shield, is listed as approximately 300,000 sq. mi. Densities of lakes range up to 7,500 in a 5,294-sq. mi. area of the Shield, southwest of Reindeer Lake, Saskatchewan. Five areas chosen randomly from the Shield (Figure 1) contained sufficient lakes to provide samples at a density of at least one per 10 sq. mi.
Basalts, Basalts, Coppermine River, Geological Survey of Canada, Kaminak Lake, Lake Sediments, Concentration, copper, Lake sediments, Rocks, sediments, Survey, Surveys, Trace elements