the physiographic region called the canadian shield:

Elevations generally decrease northward along the drainage of the Mackenzie River Valley, with a gentle rise eastward from the valley to the Precambrian Shield and a sharp rise, with several large plateaus, westward to the Rocky Mountains. Reproduced with the permission of the Minister of Public Works and Government Services Canada, 2005 and courtesy of Natural Resources Canada, Geological Survey of Canada. Reproduced with the permission of the Minister of Public Works and Government Services Canada, 2005 and courtesy of Natural Resources Canada, Geological Survey of Canada. Pour voir ce contenu, s'il vous plaît, activer JavaScript dans votre navigateur ou télécharger un navigateur qui le prend en charge. This photograph, taken on Cape Breton Island in Nova Scotia, shows the flat and virtually unmodified surface of the highlands, which contrasts with the branching network of river gorges that incise its margins. The largest, and one of the best known, is Sudbury, Ontario. Prominent moraines on the western plateau and north of Lake Ontario mark temporary pauses in the retreat of glaciers, between 14,500 and 12,500 years ago. Fort St. John is in the background to the right, and homesteads can be seen along the river. New Brunswick comprises three large units: the New Brunswick Highlands; the Chaleur Uplands, which cross the Quebec–New Brunswick border; and the Maritime Plain, which stretches around the coast of New Brunswick and Nova Scotia from the south shore of Chaleur Bay and includes Prince Edward Island and Îles-de-la-Madeleine. Many of Canada's major ore deposits are associated with Precambrian volcanoes. They include the Arctic Coastal Plains and Arctic Lowlands, the Innuitian Region of the High Arctic, and parts of the Canadian Shield in Nunavut, northern Québec and Labrador. Reproduced with the permission of the Minister of Public Works and Government Services Canada, 2005 and courtesy of Natural Resources Canada, Geological Survey of Canada. This map shows the location of these physiographic regions, including their subregions and divisions. There, scores of parallel, gravel beach ridges were thrown up by storm waves during the last 5,000–6,000 years, as sea level fell in response to rapid uplift of the Earth's crust. This is a zone, 30–150 km in extent, north of which trees are no longer able to survive.

in particular and, more recently, to landforms alone. It covers much of Greenland, all of Labrador and the Great Northern Peninsula of Newfoundland, most of Quebec north of the St. Lawrence River, much of Ontario including northern sections of the Ontario Peninsula, the Adirondack Mountains[7] of New York, the northernmost part of Lower Michigan and all of Upper Michigan, northern Wisconsin, northeastern Minnesota, the central and northern portions of Manitoba away from Hudson Bay, northern Saskatchewan, a small portion of northeastern Alberta,[8] mainland Northwest Territories to the east of a line extended north from the Saskatchewan-Alberta border, most of Nunavut's mainland and, of its Arctic Archipelago, Baffin Island and significant bands through Somerset, Southampton, Devon and Ellesmere islands. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.

This photograph of Walker Lake, near Port-Cartier in Quebec, emphasizes the typical terrain found in the Canadian Shield north of the Gulf of St. Lawrence. Canada may be divided into seven physiographic regions: Arctic Lands, Cordillera, Interior Plains, Hudson Bay Lowland, Canadian Shield Forest Lands, St Lawrence Lowlands and Appalachia. What does contingent mean in real estate? Source: Geological Survey of Canada, photograph number 2001-302. Joffre. Shield proper (about 5 million km2) covers 48 per cent of Canada's land surface (including freshwater lakes and Arctic islands). Located around Great Bear Lake, the Great Bear Plain has a rolling surface.

The rest of the region has coarse soil that does not retain moisture well and is frozen with permafrost throughout the year. The Sturgeon Lake Caldera in Kenora District, Ontario, is one of the world's best preserved mineralized Neoarchean caldera complexes, which is 2.7 billion years old.

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