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Preservation Action Plans
Geological Survey of Canada
(1 - 2 of 2)
Sketch map of part of southwestern Ontario showing shore-lines of ancient Great Lakes : to illustrate report of Robert Chalmers
This is a sketch map of southwestern Ontario showing the shore-lines of the ancient Great Lakes, from 1902. It also shows railways and county boundaries, and relief is shown by contours and spot heights.
Map showing the distribution of Huronian rocks between rivers Batchehwahnung and Mississagui
This is a geological map of the Sault Ste. Marie area in 1865. It shows different rock and soil materials.