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The Canadian Shield is a collage of Archean plates and accreted juvenile arc terranes and sedimentary basins of the Proterozoic Eon that were progressively amalgamated during the interval 2.45–1.24 Ga, with the most substantial growth period occurring during the Trans-Hudson orogeny, between c. 1.90–1.80 Ga. [5] The Canadian Shield was the ...
As more provinces and territories joined Canada, the original four arms were marshalled with the arms of the new members of Confederation, eventually resulting in a shield with nine quarterings. [17] This occurred by way of popular and even Canadian governmental usage; flag-makers took to using the complex shield on Canadian Red Ensigns.
From decades of petrologic, geochronologic, and geochemical studies, it has become apparent that the Acasta Gneiss Complex, as it is now exposed in the Canadian Shield, is the result of the complex interplay between repeated periods of felsic magma generation from the partial melting of older, mafic crust, its crystallization as felsic plutonic ...
The term shield, used to describe this type of geographic region, appears in the 1901 English translation of Eduard Suess's Face of Earth by H. B. C. Sollas, and comes from the shape "not unlike a flat shield" [2] of the Canadian Shield which has an outline that "suggests the shape of the shields carried by soldiers in the days of hand-to-hand ...
Canadian Shield. The Canadian Shield, Precambrian shield, makes up the bedrock geology highlighted by rocks and lakes [2] and a boreal forest area. There are transitional areas between boreal and tundra flora. [3] The lower boundary of the Canadian Shield cuts across the province diagonally from the latitude 57 degrees in the northwest to 54 ...
A second railway, the Canadian Northern (CNoR), was built across the northern portion of the park, opening in 1915. Both lines later became part of Canadian National Railway. The beginning of the end of rail service in the park happened in 1933 when a flood damaged an old Ottawa, Arnprior and Parry Sound Railway trestle on Cache Lake.
The Southern province is a narrow region from Sault Ste. Marie to Kirkland Lake, is made of rocks dating 1.8 to 2.4 billion years ago. [1] The Hudson Bay lowlands, located north of the Canadian Shield, are mainly made of sedimentary rocks from the Silurian Period, although some parts date from the Ordovician and Devonian periods. [1]
The coat of arms of Ontario is the armorial emblem representing the Canadian province of Ontario. The arms contain symbols reflecting Ontario's British heritage, along with local symbols. At the upper part of the shield is the red cross of St. George, representing England. The lower portion of the shield features three golden maple leaves on a ...