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1. • Precambrian rock

     • 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.
     www.britannica.com/place/Canadian-Shield

     Canadian Shield | Definition, Location, Map, Landforms ...

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   How old is the Canadian Shield?

   • The Canadian Shield contains some of the oldest rocks on Earth. In 2008, researchers estimated rock found on the northern shore of Hudson Bay, 40 km south of Inukjuak, to be 4.28 billion years old. Its age means the rock was created approximately 300million years after the formation of Earth.

   Canadian Shield | The Canadian Encyclopedia

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   Which sedimentary rocks are included in the Canadian Shield?

   • Small remnant basins of essentially flat-lying Precambrian sedimentary rocks are arbitrarily included in the shield because of their age, although they have more in common structurally with the interior platform and basins. Nearly horizontal strata of sedimentary rocks overlie Precambrian crust that extends beyond the limits of the Canadian Shield.

   North America - Geology, Forests, Lakes | Britannica

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   What is the Canadian Shield map?

   • Canadian Shield Map depicting the extent of the Canadian Shield in North America. The Canadian Shield constitutes the largest mass of exposed Precambrian rock on the face of Earth.

   Canadian Shield | Definition, Location, Map, Landforms, & Facts

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   Where did the Canadian Shield come from?

   • Rock formations and land forms like the ones in these pictures are typical of the Canadian Shield. The story of these rocks starts a long time ago. Over one billion years ago (that’s 1,000,000,000 years!), this area was covered in tall mountains called the Grenville Mountains. But where did they go?

   The Canadian Shield Rocks - Georgian Bay Biosphere

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   What are the physical features of the Canadian Shield?

   • 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).

   Canadian Shield | The Canadian Encyclopedia

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   What makes the Canadian Shield smooth?

   • Erosion and glaciers have made much of the Canadian Shield smooth. The Canadian Shield is not all the same though. Geologists have divided it into seven different regions or provinces. The names of these provinces are: Nain, Grenville, Southern, Superior, Churchill, Slave and Bear.

   Canadian Shield (Plain-Language Summary)

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3. www.thecanadianencyclopedia.ca › en › articleCanadian Shield | The Canadian Encyclopedia

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   Feb 7, 2006 · The Canadian Shield contains some of the oldest rocks on Earth. In 2008, researchers estimated rock found on the northern shore of Hudson Bay, 40 km south of Inukjuak, to be 4.28 billion years old. Its age means the rock was created approximately 300million years after the formation of Earth.

4. www.britannica.com › place › Canadian-ShieldCanadian Shield | Definition, Location, Map, Landforms ...

   www.britannica.com › place › Canadian-Shield

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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.

   • Author: The Editors of Encyclopaedia Britannica

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6. en.wikipedia.org › wiki › Canadian_ShieldCanadian Shield - Wikipedia

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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.

7. georgianbaybiosphere.com › the-canadian-shield-rocksThe Canadian Shield Rocks - Georgian Bay Biosphere

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   Aug 21, 2018 · What is the Canadian Shield made of? The Shield is made of hard rocks like granite. However, Eastern Georgian Bay is made up mostly of gneiss (pronounced ‘nice’).

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     How the Canadian Shield formed

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     Canadian Shield

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     The Canadian Shield: A Geologic Wonderland That's Over a Billion Years Old

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9. www.thecanadianencyclopedia.ca › en › articleCanadian Shield (Plain-Language Summary)

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   Jul 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.

10. canadiangeographic.ca › behind-the-canadian-shieldBehind the Canadian Shield

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    May 10, 2019 · In this view, Confederation, and the transcontinental nation that followed, was the political reflection of a logic imposed by river systems (access routes) and the rock, forest and muskeg (beaver-friendly habitat) of the Canadian Shield.

11. www.britannica.com › The-Canadian-ShieldNorth America - Geology, Forests, Lakes | Britannica

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    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.