Canadian Shield - Wikipedia
WebThe 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. It forms the North American Craton (or Laurentia), the ancient geologic core of the North American continent.
Canadian Shield | Definition, Location, Map, Landforms, & Facts
WebMar 14, 2024 · 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 .
Escudo Canadiense - Wikipedia, la enciclopedia libre
WebEl Escudo Canadiense (Canadian Shield en inglés y Bouclier canadien en francés), también conocido como macizo del Labrador o meseta Laurentiana, es un gran sector geográfico situado en Canadá oriental y central y Estados Unidos, compuesto de roca desnuda, que data de la época precámbrica.
Canadian Shield | The Canadian Encyclopedia
WebFeb 7, 2006 · 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.
North America - Geology, Forests, Lakes | Britannica
WebThe 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.
Canadian Shield - Simple English Wikipedia, the free encyclopedia
WebThe Canadian Shield is also called the Laurentian Plateau, or Bouclier canadien (French). It is a large area of exposed Precambrian igneous and high-grade metamorphic rocks (geological shield). It is the ancient geological core of the North American continent (the North American Craton or Laurentia).
Canadian Shield - New World Encyclopedia
WebThe 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 ...
Physiographic Regions | The Canadian Encyclopedia
WebPublished Online February 27, 2012. Last Edited April 29, 2024. Canada may be divided into seven physiographic regions. 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.
Canadian Shield (Plain-Language Summary)
WebJul 6, 2021 · The Canadian Shield is a huge rock formation. The rock, or crust, is also known as the North American Craton. The Craton stretches from Greenland to Mexico. The Canadian Shield makes up about 50 per cent of Canada. The Canadian Shield stretches from Labrador to the Arctic. It covers parts of Saskatchewan and Alberta.
Behind the Canadian Shield | Canadian Geographic
WebMay 10, 2019 · The Canadian Shield only came into terminological being in the 1880s. Its name combines two ideas. The first was colonial politician Thomas D’Arcy McGee’s vision, articulated in 1860, of “one great nationality bound, like the shield of Achilles, by the blue rim of ocean” encompassing “the Western mountains and the crests of Eastern ...
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