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Canadian Shield. About half of Canada’s area consists of some of the oldest rock in the world. 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 ...
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- Canadian Shield
The Canadian Shield constitutes the largest mass of exposed...
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- A total of four different mountain ranges rise from the Canadian Shield.
- The Precambrian rocks of this shield are estimated to be around 570 million years old.
- The Canadian Shield is also known as the Precambrian Shield and the Laurentian Plateau.
- The highest points of this shield are located on Baffin Island and in northern Labrador.
- Size and Shape
- Physical Characteristics
- Natural Resources
- Ecology
- Human History
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The Canadian Shield constitutes the largest mass of exposed Precambrian rock on Earth, with some formations dating back over 4 billion years. It is primarily composed of ancient crystalline rocks, including igneous and high-grade metamorphic rocks. The Shield covers approximately 8 million square kilometers (3 million square miles), spanning easter...
The landscape consists of rocky hills and irregular basins filled with lakes and swamps. The average elevation is between 300 to 610 meters (980 to 2,000 feet) above sea level. During the PleistoceneEpoch, glaciers shaped much of the Canadian Shield's current topography by scraping away soil and weathered rock, resulting in its characteristic bare ...
The Canadian Shield is rich in minerals such as gold, silver, copper, zinc, uranium, and iron. Mining has become a significant industry in this region due to the accessibility of these resources. The numerous lakes and rivers within the Shield provide substantial opportunities for hydroelectric power generation. Major hydroelectric projects include...
The Shield primarily features boreal forests dominated by coniferous trees. As one moves northward, the vegetation transitions into tundra ecosystems due to colder temperatures.
The Canadian Shield has been home to various Indigenous groups for thousands of years. Tribes such as the Cree, Anishinaabeg, Innu, Dene, and Inuithave historically inhabited this region. European settlers recognized the area's potential for fur trading due to its abundant wildlife. The waterways facilitated travel and trade among Indigenous people...
Typical shield landscape in a southern Ontario region with very few old growth trees, due to a history of logging and fires. Black River, Queen Elizabeth II Wildlands Provincial Park.Weathered Precambrian pillow lava in the Temagami Greenstone BeltFolded Precambrian gneiss of the Canadian Shield in Georgian Bay, OntarioTypical Canadian Shield landscape: spruce, lakes, bogs, and rockCanada’s Shield is one of the oldest on Earth, with areas dating from 2.5 to 4.2 billion years. It is full of rivers, lakes, and a dike swarm that is the largest dike swarm known to Earth. The Canadian Shield is made up of deep-rooted mountains and spruce, lakes, bogs, and rock. The Arctic Cordillera consists of Precambrian rock, which is ...
The Canadian Shield is the largest region in Canada. It covers about 48% of Canada’s land surface. The location reaches all the way from Labrador over to the Arctic in the northwest. It stretches across Quebec, Ontario, Manitoba and the Northwest territories, as well as parts of Saskatchewan and Alberta. It’s centred on the Hudson Bay.
Feb 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. With the exception of the Canadian Shield, the rocks of the North American ...
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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 ...
