1906 Western Canada Geology Map
Canada’s oldest rock sits at the surface across a staggering share of the country, and this sheet from the 1st Edition (1906) of the Atlas of Canada was built to make that visible. The map renders bedrock across the western Dominion, using colour and letter codes to identify rock type, era, and period of formation, along with surface coverage. Cartographers of the day gave particular emphasis to the vast Archaean nucleus, the Precambrian core geologists now call the Canadian Shield, spreading east and north from the prairie provinces.
Major cities and the railway systems of the era are printed over the geological shading, which turns the sheet into a document of early twentieth century settlement as much as a geological survey.
Sourced from Natural Resources Canada and reproduced by Map Shop on premium paper, laminated, mounted to foam core, or framed in black or walnut molding, it reads well in an earth sciences department, a mining company office, or a history enthusiast’s study.

