Located in the centre of the Interior Plains, the Alberta Plateau consists of a ring of plateaus separated by wide valleys. Valley sides have been modified by rockfalls, debris flows, landslides, soil creep and snow avalanches. With deglaciation, between 14,000 and 10,000 years ago, crustal uplift was sufficiently great to exceed sea-level rise in the central and northern zones of the Appalachian Region, so that a coastal fringe exhibits raised marine terraces which often provide pockets of sandy, arable land. Figure 17: Hall Beach on the Melville Peninsula, Nunavut. Source: Geological Survey of Canada, photograph number 2004-093. In the rest of the region, even highland and mountain zones show only locally severe glacial erosion, particularly in valleys crossing the "grain" of the terrain. The southeastern and eastern borders have been uplifted in the relatively recent geological past as a result of tectonic movements associated with the opening of the Atlantic Ocean. Some eruptions occurred during glaciation. Figure 9: North Shore of the Gulf of St. Lawrence, Quebec. Douglas, R.J.W. There are three distinct mountain systems within the Cordillera. The highest of these is the alpine tundra. Figure 6: Témiscamingue area, Quebec.

The surface of the Shield is mainly the result of glaciation and a great proportion of it is covered by water in the form of lakes, ponds and swamps. All Rights Reserved. This ancient surface was sculpted by erosion many millions of years ago. In places the old mountain ranges may be recognized by hills several hundreds of metres in height. The Cordillera encompasses a great variety of climates because of its great latitudinal extent, its location between the Pacific Ocean and the continental interior, and its rugged terrain.

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. Many mammals such as caribou, white-tailed deer, moose, wolves, wolverines, weasels, mink, otters, grizzly bear, polar bears and black bears are present.

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. In the south, permafrost exists beneath only the highest, windswept ridge crests, but northward, the permafrost limit becomes lower and, in the central and northern Yukon, there is permafrost at all elevations. The Cordillera includes plateaus, valleys and plains as well as rugged mountains.

It is mostly composed of igneous rock. Surface conditions may be barren and dry, forested or boggy, depending on surface slope and the influence of coastal winds. In the Interior and Western systems, some landforms have been produced by volcanic processes. 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.

Heavy rain and snow on the Coast Mountains give rise to dense forests and maintain extensive snowfields and glaciers at relatively low elevations. This photograph, taken in northwestern Manitoba, shows the typical landscape of glaciated Shield terrain in the boreal forest. 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. These fragments have a smooth terrain influenced by flat or gently dipping sedimentary bedrock. The physiographic region called the Canadian Shield Aa is primarily in Canada from GEOG 101 at American Military University The Canadian part of the Cordillera is about 800 km wide, and extends from southern British Columbia north to the Yukon and the Beaufort Sea. The range's highest peak is Nunavut's Barbeau Peak at 2,616 metres (8,583 ft) above sea level. will eventually become the predominant language is: Which South American country was most transformed by the forced immigration of Africans in. The river will eventually erode through the ‘goose-neck’ and take the shorter, more direct route down the valley. Don Mills, Ont: Oxford University Press. These characteristics contribute to the frequent occurrence of spring flooding. Why is Charlie having so much difficultly talking to Miss Kinnian and other people?

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