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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.
- North America - Geology, Forests, Lakes | Britannica
The Canadian Shield is the principal area of North America...
- Canadian Shield - Students | Britannica Kids | Homework Help
This Precambrian igneous rock is in a vast mass called the...
- North America - Geology, Forests, Lakes | Britannica
- How Was The Canadian Shield formed?
- Geology
- Physical Features and Landforms
- Vegetation
- Wildlife
- Natural Resources
- Human History
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.
Jul 6, 2021 · 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.
May 10, 2019 · Through the ages, winds, rain, and ice eroded the shield’s soaring mountains (some of them thousands of metres higher than present-day Everest) down to a low plateau of rolling hills. Vast quantities of sediment were deposited, layer after layer, in the shallow waters surrounding the plateau.
5 days ago · 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.
This Precambrian igneous rock is in a vast mass called the Canadian Shield. It was dry land ages ago when the oceans still rolled over the sites of the Appalachian and the Rocky mountains. It was uplifted to form a plateau and then carved by stream erosion. Finally glaciers scraped it almost level.
