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Physical Geography of Canada (land form reagonds (canadian shiled…

- - - - human beings develop
      - ice age ends
      - continents move to todays position
    - - early forms of mammals dominate
      - mountians form
  - - - first feathered bird
      - formation of western cordillera begins
    - - most gas and oil deposit form
      - great variety of fish and reptiles
    - - shallow seas cover north amarica
      - reptiles dominate and age of the degings
  - - - most coal deparits form
      - first reptiles appear, abunant fish
    - - many spiders insects ferns
    - - first amphibians appear
    - - life on land apears
      - armoured fish and large coral reefs dominate the seas
    - - collision of north America and Europe results in formation of Appalachian mountains
      - first vertebrates appear in the seas
    - - sedimentary rocks form
      - many invertebrates develop
    - - sponges and jellyfish appear
      - canadian shiled forms
      - aquatic plants appear
      - bacteria may have existed
- - - - Batholith
      - – Stock
      - – Lopolith
      - – Laccolith
      - – Volcanic
      - neck
      - – Sill
      - – Dike
  - - - – Lava flow
      - or plateau
      - – Volcano
      - (many
      - types)
      - – Crater
      - – Caldera
      - – Fissure
  - - - Can move up to 700 km/h and can be 1,000 °C
      - hot
      - Normally hug the ground and travel downhill,
      - or spread laterally under gravity.
      - They are a common and devastating result of
      - certain explosive volcanic eruptions.
      - Ex. Pompeii and Mount St. Helens
- - - - 0.1% of earths volume
    - - sima
        
        crust under oceans
      - sial
        
        continental crust
  - - - serface crust and below earths crust
  - - - thought 2 provide base witch crustle plates float
    - - platectonics
      - mountians building
  - - - made of iron, silica and magnesium
      - uppermantle (liquid)
      - lower mantle (solid)
  - - - 1/3 of earths total mass
    - - outer core
        
        liquid, iron, multinmegma
      - innercore
        
        solidiron, niccle
- - - - continents fit together like a puzzle
    - - Similar fossils found across the ocean across each other
    - - similar mountain ranges and ocean apart
  - - - 200,000,000 years ago
        
        continents began to break apart
        
        Continents have ben drifting ever since
- - - - earth
        
        created by higher power
        
        god or gods
        
        took place over thousands of years
    - - univerce began with big bang
        
        15-20 billion years ago
        
        earth is 4,600,000,000 years old
  - - - following a huge explosion
        
        dust and gas was created as result
        
        drawn together by gravitational attraction
        
        formed a huge clowed
    - - gathered together in circuler movments
        
        eddies
- - - - really cold
      - no trees
      - far from other things
      - left over glasiures
    - - carabue
        
        artic fox
- - - - sandy beach = old
      - rocky beah = young
    - - earodes setement and transports away
    - - freezing and thoughing = cracked rock
- - - - collision faut - two continental plates = mountain building
      - subduction - one continental plate and one ocean plate