12.1 How does continental drift relate to plate tectonics?

Global Tectonics: Plates and Plumes
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Why study plates and their motions?
Continental Drift
Why study plates and their motions?
12.1 How does continental drift relate to plate tectonics?
12.1 How does continental drift relate to plate tectonics?
12.1 How does continental drift relate to plate tectonics?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.2 What is the evidence that plates are rigid?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
Age of Crusts
Magnetic Record of Seafloors
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
Seismic Tomography Data
Rift Valleys
Forming Seas
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.3 What is the evidence that plates move apart at divergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
Seismic Tomography
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
Convergent Plate Boundaries
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.4 What is the evidence that subduction occurs at convergent plate boundaries?
12.5 What is the evidence that plates slide past one another at transform plate boundaries?
Fault Displacement
12.5 What is the evidence that plates slide past one another at transform plate boundaries?
12.5 What is the evidence that plates slide past one another at transform plate boundaries?
12.5 What is the evidence that plates slide past one another at transform plate boundaries?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.6 What does the mantle-plume hypothesis explain that plate tectonics cannot explain?
12.7 How do we know ... that plates move in real time?
12.7 How do we know ... that plates move in real time?
Global Plate Motion
12.7 How do we know ... that plates move in real time?
12.7 How do we know ... that plates move in real time?
Measurements and Predictions
12.7 How do we know ... that plates move in real time?
12.7 How do we know ... that plates move in real time?
12.8 What forces cause plate motions and plumes?
12.8 What forces cause plate motions and plumes?
12.8 What forces cause plate motions and plumes?
12.8 What forces cause plate motions and plumes?
12.8 What forces cause plate motions and plumes?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?
12.9 What were the consequences of plate motion over geologic time?

Text and Images from Slide

The continental drift hypothesis, the forerunner of plate tectonics, proposed that all landmasses were joined in a supercontinent called Pangea. Pangea broke into continental fragments that drifted into their current positions.
The continental drift hypothesis was not universally accepted because it lacked a reasonable explanation for why continents moved. In the plate tectonic theory, continents are like passengers on the plates.

lecture12

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Text and Images from Slide