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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 ...
Pukaskwa National Park in Ontario.. These hills support a large area of rich taiga forest dominated by black spruce (Picea mariana) along with jack pine and some paper birch (Betula papyrifera) and in the warmer south-facing areas some trembling aspen (Populus tremuloides), white spruce (Picea glauca), Ontario balsam poplar (Populus balsamifera) and balsam fir (Abies balsamea).
Much of the landscape, including the Athabasca Plain, is the boreal forest that covers so much of Canada at this latitude, consisting of black spruce (Picea mariana), jack pine (Pinus banksiana), quaking aspen (Populus tremuloides), white birch (Betula papyrifera), balsam poplars, white spruce (Picea glauca), and balsam fir (Abies balsamea).
Northern Canadian Shield taiga is a taiga ecoregion located in northern Canada, stretching from Great Bear Lake in the Northwest Territories to Hudson Bay in eastern Nunavut. The region supports conifer forests to its northern edge, where the territory grades into tundra .
An outcrop of the Frontenac Axis near Cornwall, Ontario. The Thousand Islands – Frontenac Arch region or the Frontenac Axis is an exposed strip of Precambrian rock in Canada and the United States that links the Canadian Shield from Algonquin Park with the Adirondack Mountain region in New York, an extension of the Laurentian Mountains of Québec.
Labrador is the easternmost part of the Canadian Shield and is composed of ancient Precambrian igneous and metamorphic rocks. The interior averages about 450 metres (1,480 ft) above sea level and is cut by large, east-flowing rivers, such as the Churchill River and its tributaries. [11] The northern coast is largely mountainous.
The Taiga Shield Ecozone, as defined by the Commission for Environmental Cooperation (CEC), is an ecozone which stretches across Canada's subarctic region. Some regions exhibit exposed Precambrian bedrock of the Canadian Shield , the oldest of the world's geological formations. [ 1 ]
The Churchill Craton is the northwest section of the Canadian Shield and stretches from southern Saskatchewan and Alberta to northern Nunavut. It has a very complex geological history punctuated by at least seven distinct regional tectono metamorphic intervals, including many discrete accretionary magmatic events.