What is the Canadian Shield and why is it special?

What is the Canadian Shield and why is it special?

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.

Why does the Canadian Shield matter?

The Canadian Shield was the first part of North America to be permanently elevated above sea level and has remained almost wholly untouched by successive encroachments of the sea upon the continent. It is the Earth’s greatest area of exposed Archean rock.

What is the Canadian Shield used for?

The Canadian shield gets its name from its shape, which resembles an ancient shield, raised and ready to defend North America. The Canadian shield’s bare surface makes it much more useful for mining, logging, hydroelectric power generation, and similar operations that do not require deep earth.

What are the benefits of living in the Canadian Shield?

While at times a barrier to settlement, the Shield has also yielded great resources, including minerals, coniferous forests and the capacity for hydroelectric developments. The Canadian Shield refers to the exposed portion of the continental crust underlying the majority of North America.

Why is the Canadian Shield important to North America?

Where does the Canadian Shield start and end?

The Canadian Shield is a physiographic region that covers more than half of Canada, parts of north-western United States and extends north to Greenland. The Canadian Shield includes the Great Lakes region and Lake Athabasca.

What are the natural resources of the Canadian Shield?

Natural Resources / Industries in the Canadian Shield Region today: 1) Furs – from fur bearing animals (hunting and trapping is still a large industry). 2) Minerals – this makes a lot of sense because the Shield is solid rock. Canadians extract copper, gold, nickel, zinc and lead from this area.

How big is the Canadian Shield in square kilometres?

Comprising over half the area of present-day Canada, the eight million square kilometres of pre-Cambrian “shield” is the exposed portion of the ancient geological core of North America.

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