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North American Regions. Physiographic Regions Landforms and their formation.

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Presentation on theme: "North American Regions. Physiographic Regions Landforms and their formation."— Presentation transcript:

1 North American Regions

2 Physiographic Regions Landforms and their formation

3 Raised relief map with “upper left” lighting, a cartographic trick.

4 Simplified physiographic map, low elevations are shown in green, but are not necessarily forested. Some low-lying regions are deserts.

5 Physiographic regions to know printable version on the main page Southern extent of Pleistocene glaciers

6 North America’s Major Physiographic Regions Key Atlantic & Gulf Coastal Plains (lime green) Appalachians (Fall Line + 4 sub-divisions: Piedmont, Blue Ridge, Ridge & Valley, and Plateaus) (pale yellow) Mississippi Valley (part of the coastal plain) Interior Highlands (Ozard and Ouchitas) (dark green) Interior Plains & Prairies (pink east of the 20” isohyet) Great Lakes (Canadian Shield and Prairies) Continental Shield (aka Canadian or Laurentian Shield) Great Plains & High Plains (pink west of the 20” isohyet) Arctic Coastal Plain (bright yellow) Rockies (brown) Colorado Plateau (orange-ish) Basin & Range (pale lime green to south) Columbia Plateau (pale lime green to north) Western Mountains & Valleys (Sierra Nevada, Cascades; Sacramento, Willamette, Imperial Valleys) (reddish orange)

7 Canadian Shield, north of Lake Huron

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26 Cretaceous (age of mammals) Inland Seas

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35 NC Carolina Bays video

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38 Pangaea Movie 600 million years of Earth History Permian, 225 myaTriassic 200 mya Jurassic 135 myaCretaceous 35 mya Today

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40 Ozarks to north Ouachita to south Miss Valley to east Great Plains to west

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43 Plate Tectonics

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54 Monterrey, CA

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56 Hollywood 1920 1980

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