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Sep 4, 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. Some of the ancient mountain ranges can still be recognized as a ...
- The Canadian Shield
North America - Geology, Forests, Lakes: The Canadian Shield...
- The Canadian Shield
- How Was The Canadian Shield formed?
- Geology
- Physical Features and Landforms
- Vegetation
- Wildlife
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The Canadian Shield formed over 3 billion years through processes such as plate tectonics, erosion and glaciation. Plate tectonics refers to the movement and collision of the Earth’s outer crust. When these crustal plates collide they may weld together, forming larger landmasses. The Shield can be thought of as a jigsaw puzzle of different crustal ...
The Shield can be divided into seven geologically distinct regions sometimes referred to as provinces. They are the Nain, Grenville, Southern, Superior, Churchill, Slave and Bear provinces. Each is home to rock of different ages, types and formation characteristics, as well as different mineral deposits. The Southern Province, for example, is home ...
The Canadian Shield’s most notable physical features are thousands of small lakes, thin layers of soil and rolling hills. Lakes are largely the result of glacial erosion during the last ice age. Other evidence of past glacial structures include striations (lines scraped into rocks) and drumlins(long hills of glacial sediment). In addition to the th...
The Canadian Shield is dominated by the boreal forest ecosystem. Common coniferous trees include white and black spruce; jack, red, white and eastern white pine; balsam fir; tamarack; eastern hemlock; and eastern red cedar. Deciduous trees include red and mountain maple; white and paper birch; trembling aspen; black ash; and balsam poplar. North of...
A wide range of wildlife calls the Canadian Shield home. Lakes and rivers in the south house a variety of fish species including trout, burbot and northern pike. In addition to fish, lakes are often spotted with a mix of waterfowl including wood ducks, Canada geese and American black ducks. Other birds include boreal owls , great horned owls, blue ...
The Canadian Shield is rich in natural resources, including minerals, forests and freshwater. Mining began in the region in the mid-19th century and was key to Canada’s economic development. Various minerals and precious stones have been mined or continue to be mined on the Shield, including gold, silver, copper, zinc, nickel, iron, uranium and dia...
The Canadian Shield is the traditional territory of several Indigenous peoples. The Innu made their home on the Shield in what is now Québec and Labrador, while the Cree, Anishinaabeg and Métis occupied large swaths of the region through Québec, Ontario, Manitoba, Saskatchewan and Alberta. The traditional territory of the Dene and Inuit includes th...
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. It forms the North American Craton (or Laurentia), the ancient geologic core of the North American continent.
Jul 6, 2021 · The mountains of the Canadian Shield were eroded. Erosion happens when wind and rain wear down rocks, land, and earth. The Canadian Shield continues to be changed by environmental forces every day. Physical Features and Resources. Erosion and glaciers have made much of the Canadian Shield smooth. The Canadian Shield is not all the same though.
May 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 waves” as well as the rivers and valleys between.
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. It forms the North American Craton (or Laurentia), the ancient geologic core of the North American continent.
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5 days ago · North America - Geology, Forests, Lakes: 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 rift subsequently moved ...
