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Canada’s Landform Regions

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Presentation on theme: "Canada’s Landform Regions"— Presentation transcript:

1 Canada’s Landform Regions
Cross section p landform – a natural feature of a land surface

2

3 Vocabulary Erosion – the process of the wearing down of the earth’s landscape Peneplain – ‘almost a plain’ Lakescape – landscape with many lakes Badlands – area of hills and deep gullies formed by erosion, with sparse vegetation Moraine - an accumulation of earth and stones carried and finally deposited by a glacier Plateau – elevated area of fairly level land Continental plate – shallow ocean floor bordering a continent Heartland – region with a large, concentrated population considerable manufacturing, and influence over surrounding regions.

4 Precambrian Shield aka Canadian Shield
Covers almost half of Canada – km²

5 Name pre cambrian indicates the rocks were in place before the Cambrian period of the earth
Canada’s oldest rocks

6 Only the roots of mountains remain
Erosion has reduced the area to a peneplain Today elevation is seldom over 600m

7 Landscape is very rugged, like a lakescape
Precambrian bedrock of the Canadian Shield rising out of Reindeer Lake, on the border between northeastern Saskatchewan and northwestern Manitoba. Landscape is very rugged, like a lakescape Lakes numerous, Pleistocene ice ages added to the shape of the region (saucer shape), tends to drain towards Hudson Bay

8 Athabasca Basin – northwestern Saskatchewan, northeastern Alberta
Tourist playground Many minerals because of metamorphic rocks Lowest population of Canada’s four major southern landform regions; population widely scattered; most live in or near major mining areas or forestry centers Not exclusively Canadian

9 The Great Plains Extends over central Canada, from near the Ontario-Manitoba border to the Rockies Vast majority of the population of the Prairie Provinces and Northern Territories live here

10 Almost entirely in Canadian Territory
Formed after the Shield – the sedimentary rocks on the plains were deposits from the Shield Shallow seas invaded North America during the early eras. Shells formed part of the thick strata of limestone and chalk. Material from the Cenozoic Era later eroded adding to more layers.

11 Three different levels
Region grows higher as it approaches Cordillera Deep valleys cut by rivers Covered by glaciers in the last ice age, there are scattered morainic features, also contains badlands

12 Manitoba Not a source of metallic minerals; however, natural oil and gas collected in region’s porous rocks

13 Saskatchewan Grazing Oil Grain
Potash is mined to be used in the manufacture of fertilizer and other chemical products.

14 Rich soil is the greatest physical resource; Canada’s breadbasket
Soils developed from glacial deposits Settlement pattern of region determined by agriculture

15 The Western Cordillera
Forms the western boundary of the Great Plains Separates most of British Columbia’s population from the rest of Canada

16 Highest most rugged of the regions
Larger interior plateau between two mountain ranges: Columbia Mountains (west side; oldest of the two regions) and Rocky Mountains (east side)

17 Bugaboo Glacier Provincial Park, British Columbia
Both ranges formed mostly of folded sedimentary rock; both were once sea floors

18 Upper Arrow Lake, British Columbia
Rockies folded because of the movement of the North American plate toward the Pacific Plate – 65 million years ago; erosion has affected the mountains

19 Mountain Range that extends from British Columbia into New Mexico
Volcanic activity nearby because the North American Plate rides over the Pacific Plate just off the coast of B.C.

20 Okanagan Valley, British Columbia
Interior Plateau highland area; not as rugged as the mountains; resembles area of low mountains Provides good farmland Sparsely populated; people concentrated in the valleys and troughs Okanagan Valley, British Columbia

21 Vancouver, British Columbia
Largest cities are on the coast – Vancouver

22 The Great Lakes/St. Lawrence Lowlands
Smallest of the four southern landform regions – yet largest population – close to three fifths of Canada’s population

23 Known as nation’s heartland – Ontario and Quebec
Forms one region, yet is separated by projection of the Shield into eastern Ontario More heavily populated because most favoured landform region in Canada

24 Excellent base for agriculture and settlement
Reaches farther south than any other region; most pleasant climate

25 Flowerpot Island, Ontario
Close to trading partner USA Region was submerged under inland seas; sediments were deposited from the shield and Appalachians; seas drained away and left material – developed into sandstone, limestone, and shale

26 Rock in place is old sea floors – glacier moraine
Ice formed Great Lake basins

27 Mont St-Hilaire, east of Montreal
St Lawrence Lowlands have a top layer of sediment laid down by the Champlain Sea – sea flooded inland covering entire lowland area Sea receded leaving behind excellent deposits which formed into excellent soil

28 The Appalachians Sediments were laid down in the Appalachian region; fold mountains formed due to the collision of the North American and European plates – early in the Mesozoic era

29 Geologists believe that Atlantic Canada was once joined to northern Europe
Appalachians continue out onto the continental shelf – submerged

30 Volcanism occurred as the plates collided – volcanoes erupted and magma intruded into the sedimentary layers; considerable faulting occurred; ie Cape Breton Highlands (above)

31 Glacial moraines are common
Prince Edward Island Erosion has reduced much of the Canadian Appalachian to a peneplain – as on the shield Glacial moraines are common

32 Prince Edward Island Terrain generally rugged; population concentrated in areas favoured with deep soil and level relief

33 Larger cities are located on deep harbours
Great variety of rocks – mineral base also varied Igneous, sedimentary and metamorphic rocks provide mineral resources

34 The Northern Mountains and Hudson Bay Lowlands
Least known, least settled and economically, the least used of all regions

35 Mountains result of folding and faulting
Barbeau Peak, Nunavut Mountains result of folding and faulting Mountains are found on the northernmost islands of the Arctic archipelago. Some are quite high. The highest, Barbeau Peak, reaches 2616 m.

36 Hudson Bay Lowlands, Manitoba
Two separate areas: Hudson Bay Lowlands and Lowlands on the more southern islands of the Arctic archipelago Very low population


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