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The Canadian Shield (French: Bouclier canadien [buklje kanadjɛ̃]), 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.
The Canadian Shield constitutes the largest mass of exposed Precambrian rock on the face of Earth. The region, as a whole, is composed of ancient crystalline rocks whose complex structure attests to a long history of uplift and depression, mountain building (orogeny), and erosion.
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 American Craton, extends from northern Mexico to Greenland and consists of hard rocks at least 1 billion years old.
The Canadian Shield, also known as the Laurentian Plateau, is an extended area of exposed metamorphic and Precambrian igneous rocks that form the geological core of North America. The Canadian Shield is made up of the oldest known rocks some of which date back to the formation of the planet.
The Canadian Shield is a marvel of geological history, encompassing around 2 million square miles of ancient rock that forms the foundation of the North American continent. This expansive region holds a plethora of fascinating facts, shedding light on its significance and unique characteristics.
The Canadian Shield is the principal area of North America where rocks of Precambrian age (i.e., those that are more than 542 million years old) are exposed at the surface. The shield was rifted apart between Canada and Greenland by seafloor spreading in the Labrador Sea and in Baffin Bay between 90 and 40 million years ago.
The Canadian Shield —also called the Laurentian Plateau, Laurentian Shield, Bouclier Canadien (French), or Precambrian Shield —is the massive U-shaped, almost circular region of the Earth that has extensive exposed Precambrian rock, forms the nucleus of North America, and extends from Lake Superior on the south to the Arctic Islands on the north...
The Canadian Shield stretches from Labrador to the Arctic. It covers parts of Saskatchewan and Alberta. It covers much of Quebec, Ontario, Manitoba and the Northwest Territories.
The Canadian Shield is a marvel of geology, a vast expanse that covers nearly half of Canada. From towering rock formations to boreal forests teeming with life, this landscape tells a story of our planet’s deep history and ongoing resilience.
The Canadian Shield is the largest and oldest of these regions. The other six physiographic regions are younger and form two concentric rings around the Canadian Shield. The outer, older ring contains the Western Cordillera, Canadian Arctic and Appalachian Region.