Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the...
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Transcript of Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the...
![Page 1: Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the major force in geomorphology.](https://reader035.fdocuments.us/reader035/viewer/2022062805/5697c01c1a28abf838ccfe76/html5/thumbnails/1.jpg)
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Plate Tectonics- theory stating that the Earth’s crust is made up of large, moving plates
- the major force in geomorphology.
![Page 3: Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the major force in geomorphology.](https://reader035.fdocuments.us/reader035/viewer/2022062805/5697c01c1a28abf838ccfe76/html5/thumbnails/3.jpg)
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Continental Drift- Idea developed by Alfred Wegener in 1915.
- Proposed that the light continental crust “floated” on the dense oceanic crust.
- Proposed the idea of “Pangea”
- His theories were altered to create the modern view of plate tectonics.
![Page 5: Plate Tectonics - theory stating that the Earth’s crust is made up of large, moving plates - the major force in geomorphology.](https://reader035.fdocuments.us/reader035/viewer/2022062805/5697c01c1a28abf838ccfe76/html5/thumbnails/5.jpg)
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Boundaries-Three types of boundaries:
- Convergent
- Divergent
- Transform
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Convergent Boundaries-Boundary where plates push together.
- Three types:
- Continent/Continent - creates non-volcanic mountains (Himalayas)
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Convergent Boundaries
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Convergent Boundaries-Boundary where plates push together.
- Three types:
- Continent/Continent - creates non-volcanic mountains (Himalayas)
- Ocean/Continent - aka Subduction - creates volcanic mountains (Andes, Cascades)
- Ocean/Ocean - creates volcanic islands (Indonesia)
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Divergent Boundaries-Boundary where plates pull away from each other.
- Examples:
- Mid-Atlantic Ridge (Iceland)
- Great Rift Valley in Africa
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Divergent Boundaries
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Transform Boundaries-Boundary where plates slide parallel to each other.
- Example: San Andreas Fault - major earthquakes
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Plate Tectonics
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Ring of Fire- Area of subduction around the Pacific Ocean known for volcanoes.
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