GEOG 2RC3 Final: Geography 2OC3 - All Lectures
4 Jan 2017
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Document Summary
The logical starting point is canada"s physical environment. It is canada"s physical geography that underlines its distribution of population and the fundamental structure of its economy. Textbook states that circumstances defining a favourable physical base can change over time and such changes have the power to alter the prospect for regional expansion and contraction . The earth is 4. 5 billion years old, however the north american landmass as we know it is young by comparison at a mere 66 million years old. Earth began as a fiery ball of lava in the hadean period, and has since cooled to allow accumulation of water and formation of uplifted continents. Our own canadian shield is a remnant from the early volatile volcanic days on earth, and contains some of the earth"s oldest igneous rocks. Evolution of present day continent configuration took hundreds of millions of years, with many supercontinents (such as rodinia and. Pangaea) forming in between this span of time.
