Plate tectonics theory for how Continental Drift works
- Slides: 35
Plate tectonics – theory for how Continental Drift works 200 million years 135 million years 65 million years Today
Seafloor magnetic anomalies and Plate Tectonics
The origin of seafloor magnetic anomalies reversals of the Earth’s magnetic field.
Reversals of Earth’s magnetic field Normal polarity Reversed polarity
Seafloor spreading and magnetic reversals
Dating Magnetic reversals
Sea-floor spreading
03_23. jpg Sea-floor spreading Subduction
Tectonic plates and the lithosphere
Divergent plate boundaries and mantle up-welling Convergent plate boundaries and subduction
Plate tectonics and the ocean floor
Mantle convection and Plate Tectonics
Controls on spreading and subduction Slab push and slab pull
Distribution of Mid-ocean ridges, fractures and trenches
Distribution of World’s Volcanoes
Distribution of Earthquake foci Trend from shallow to deep focus earthquakes - subduction
Distribution of earthquakes along a subduction zone
03_23. jpg Sea-floor spreading Subduction
Crustal plates
04_11. jpg
Supercontinents Pangea 400 Ma – 180 Ma Rodinia 1100 Ma – 700 Ma
The fate of subducted slabs
Distribution of Mid-ocean ridges, fractures and trenches
Transform faults
Transform faults and plate boundaries
The San Andreas transform fault
Hot spot volcanoes
Hot spots and mantle plumes
Hot spots and mantle plumes
Interpretation of plate motion from hot spots
Rates of plate motion
Continental Rifting
The African Rift Valley
Plate tectonic summary Zoomable Art: Theory of Plate Tectonics
Plate tectonic summary
- Compare continental drift and plate tectonics
- Plate tectonic theory vs continental drift
- Convergent plate boundary
- Plate tectonics vs continental drift
- Compare continental drift and plate tectonics
- 7 lithospheric plates
- Oreo plate tectonics
- Climate evidence continental drift
- Pangea explanation
- Continental drift
- Kesler science plate boundaries
- Continental drift theory
- Proof of continental drift theory
- Proof of continental drift theory
- Continental drift
- Continental drift theory slideshare
- Wegners theory of continental drift
- Evidence of the theory of plate tectonics
- Plate tectonics theory states that
- Summarize the theory of plate tectonics
- Types of volcanoes
- Unifying theory of plate tectonics
- Theory of plate tectonics
- Section 1 continental drift
- Evidence of continental drift
- Fossil correlation continental drift
- Glossopeteris
- Continental drift puzzle
- Fossils as evidence of continental drift
- What type of plate boundary
- Continental drift simulator
- Continental drift
- Webquest plate tectonics
- Continental drift
- Continental drift warm up
- Mid oceanic ridge