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Canadian Shield
noun
, Geology.
- the extensive region making up much of northern and central Canada underlain by Precambrian rocks that have been eroded to produce a low shieldlike profile.
Canadian Shield
noun
- Also calledLaurentian ShieldLaurentian Plateau (in Canada) the wide area of Precambrian rock extending west from the Labrador coast to the basin of the Mackenzie and north from the Great Lakes to Hudson Bay and the Arctic: rich in minerals See shield
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Word History and Origins
Origin of Canadian Shield1
First recorded in 1920–25
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