10 - SEE DIAGRAM 3 2 Distribution of 300 Ma glaciers 3...

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17:25 Divergent Boundaries Iceland, rare instance where a hot spot coincides with a spreading ridge Hot spots DO NOT usually occur underneath spreading ridges READ CHAPTER 6 BRUMBAUGH BOOK pg. 104-119 Science proves what is wrong Continental Drift 1915 Alfred Wegener Meterologist Pangaea started to break up into two smaller supercontinents, called Laurasia  and Gondwanaland, during the Jurassic period. By the end of the Cretaceous  period, the continents were separating into land masses that look like our  modern-day continents. 1.  Continents all fit back together  as one super continent called Pangaea  ~250 Ma These continents drifted apart eventually 5 stages: Permian, Triassic, Jurassic, Cretaceous, and Present Day
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Unformatted text preview: SEE DIAGRAM 3 2. Distribution of 300 Ma glaciers 3. Distribution of 250 Ma deserts and swamps 4. Distribution of ancient mountain ranges ( continent-continent) collision Across the Atlantic ocean, they continents would fit together 5. Paleontological (Fossil) distributions Ancient Glaciers Form a perfect circle around the south pole Glaciers leave chips and form concentric circles --to map out the direction the glacier was flowing All flowing outward Geologic Evidence for Continental Drift When you reconstruct where all the swamps and deserts were, they make perfect sense 17:25 17:25...
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This note was uploaded on 10/06/2010 for the course GEOL 240Lxg at USC.

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10 - SEE DIAGRAM 3 2 Distribution of 300 Ma glaciers 3...

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