Canadian Geographic
Left navigation image
INSIDE: Rocks and minerals Go now!

A jumble of ceaselessly recycled igneous, sedimentary, and metamorphic rocks makes up the earth’s surface.


Rocks and minerals

Viewed by satellite, the face of Canada reveals six clearly defined landform regions: Cordillera, Interior Plains, Canadian Shield, Great Lakes–St. Lawrence, Appalachian, and Arctic. All these regions occupy significant portions of Canada’s vast expanse. Each possesses similar geologic structures, physical features, climatic conditions, soils, and vegetation. Considered as a whole, Canada’s landforms encompass an unrivaled diversity of landscapes: spectacular mountain ranges, sweeping plains, rocky uplands, temperate lowlands, and frigid tundra. The forces of nature — our daily weather, for example — actively shape landforms. Some forces level landforms, others rebuild them. Over time, the impact of water, ice, and wind slowly and steadily reduce the mighty Rockies to rubble, while rivers bear away sediments to deltas and seabeds where new landforms wait to be born.

On the next page:

Geology


Pointer disabled  Go now!
Quiz :

Canada's oldest known evidence of life, discovered in Ontario, was a 2.5 billion year old fossil of what?

Grass
Jellyfish
Algae