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Lecture 11

Lecture 11 - Environmental Challenges Facing Canadians

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University of Toronto Scarborough
Environmental Science
Nick Eyles

Lecture 11 - Environmental Challenges Facing Canadians Monday, March 19, 2012 10:09 AM FIG. 20.4 WILL BE ON THE EXAM (AROUND HALF A DOZEN QUESTIONS)  Generalities Rodenea & Pangea   When Pangea was forming, which continents were colliding with North America, what happened when Pangea broke up 1. The original North American continent, Arctica, which started to form about 2.5 billion years ago from smaller continents and was completed by about 1.9 Billion years ago when old Achean cratons (e.g. Slave, Nain provinces) were welded together by the Trans-Hudson Orogen and others 2. Added to the North American continent during the formation of Nena about 1.8 million years ago after the Penokean Orogeny 3. Added during the formation of Rodinia about 1.3 million years ago during the Grenville Orogeny 4. Added during the formation of Pangea about 600 million-300 million years ago 5. Added after the breakup of Pangea about 250 million years ago BOX 20.6 ALSO ON EXAM  Africa collides on the Eastern side of Canada  Atlantic opens  And then geologic action happens on the Western side  He will ask how the diagram works and so on Why do we study environmental science? To make the world more habitable An Urban World: The Age of Construction  Almost 80% of t
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