Formation of the Regions
Appalachian Region- The Appalachian Region was formed by erosion and glaciers wearing down the mountain ranges. Rock layers slowly covered the vegetation of the region and eventually the layers became large deposits of coal.
Canadian Sheild Region- The Canadian Sheild Region was once a volcanic mountain range. Over time erosion and weathering have worn the land down to being a very flat, bare rock, lakes, and wetland landscape this is how the Canadian Sheild was formed.
Arctic Region- The Arctic Region was formed by pressure put on at the edge of the Canadian Sheild that pushed up the sedimentary rock to form fold mountains.
St. Lawrence Lowlands- This region was formed by retreating ice. The ice sheets pushed soils from the Sheild to the Lowlands. When the ice sheets melted big lakes were formed.
Interior Plains-This region was formed by soils carried by rivers from the Canadian Sield. The soils were carried to the regions edge. The soil then formed horizontal layers of sedimentary rock, This then became large areas of flat land, rolling hills, and river valleys.
Cordillera Region– This region was formed by a plate collision that caused the earths crust to buckle. It then caused pushing and folding volcanic rock into mountains. Plate tectonics formed plateau’s, valley’s and trenches. Erosion from glaciers and rivers created the ruggged mountains.
