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Canadian Shield from en.wikipedia.org
The Canadian Shield is a broad region of Precambrian rock (pictured in shades of red) that encircles Hudson Bay. It spans eastern, northeastern, and east- ...
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Canadian Shield

Shield in Ontario, Canada
The Canadian Shield, also called the Laurentian Shield or the Laurentian Plateau, is a geologic shield, a large area of exposed Precambrian igneous and high-grade metamorphic rocks. It forms the North American Craton, the ancient geologic core of... Wikipedia
Canadian Shield from www.britannica.com
Canadian Shield, one of the world's largest geologic continental shields, centered on Hudson Bay and extending for 8 million square km (3 million square ...
Canadian Shield from www.thecanadianencyclopedia.ca
The Canadian Shield refers to the exposed portion of the continental crust underlying the majority of North America. The crust, also known as the North ...