The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are...
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Transcript of The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are...
![Page 1: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/1.jpg)
The Sea Floor
![Page 2: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/2.jpg)
![Page 3: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/3.jpg)
Continental vs. oceanic crust
![Page 4: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/4.jpg)
What is Continental Drift?
• The idea that the plates are floating and moving around on a liquid mantle.
![Page 5: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/5.jpg)
Evidence of Continental Drift and Plate Tectonics
1. Discovery of Mid-Ocean ridges
![Page 6: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/6.jpg)
2. The fact that the earth fits together like a puzzle.
![Page 7: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/7.jpg)
3. Similar species found on different continents
![Page 8: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/8.jpg)
4. Deep sea rock much younger than continental rock. Why?
![Page 9: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/9.jpg)
5. Distribution of earthquakes and volcanoes
![Page 10: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/10.jpg)
6. Magnetic anomalies on the sea floor
![Page 11: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/11.jpg)
Fossils found on high on mountains
![Page 12: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/12.jpg)
All this combined led to the current theory of plate tectonics. We are
moving right now.
![Page 13: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/13.jpg)
Direction of plate movement
![Page 14: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/14.jpg)
Three types of plate movement
• 1. Diverging boundary
• 2. Converging boundary
• 3. Transform boundary
![Page 15: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/15.jpg)
Diverging Boundary – mid ocean ridge
![Page 16: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/16.jpg)
Converging Boundary
• Two Types– Oceanic crust to continental crust – subduction
zones – Continental crust to Continental crust
![Page 17: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/17.jpg)
Oceanic crust to continental crust – subduction zones
![Page 18: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/18.jpg)
Continental crust to Continental crust
![Page 19: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/19.jpg)
Transform Boundary
![Page 20: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/20.jpg)
San Andres Fault
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![Page 22: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/22.jpg)
![Page 23: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/23.jpg)
Seamount
![Page 24: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/24.jpg)
Island Arc Formation
![Page 25: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/25.jpg)
Atolls
![Page 26: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/26.jpg)
Atoll formation
![Page 27: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/27.jpg)
Continental Margins
![Page 28: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/28.jpg)
Mid Ocean Ridges
![Page 29: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/29.jpg)
Hydrothermal Vents
![Page 30: The Sea Floor. Continental vs. oceanic crust What is Continental Drift? The idea that the plates are floating and moving around on a liquid mantle.](https://reader036.fdocuments.us/reader036/viewer/2022062408/56649f2a5503460f94c43e12/html5/thumbnails/30.jpg)