This volume was prepared by Fellows of the Geological Sciences Section, in response to their desire to bring up to date and to synthesize information available on the structures present in the Shield. It is a contribution to the basic understanding of the significant geological structures in the Canadian Shield.
The distinguished contributors include members of several Canadian university departments of geology, government departments, and survey corporations. The editor, John S. Stevenson, who provides a helpful introduction, was a member of the Department of Geological Sciences, McGill University, Montreal.