Chapter Slides

Chapter Slides - Appalachians Reverse/Thrust Earth stresses...

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Plate Tectonics How does it work?
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Earth’s Interior Earth’s Interior
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mantle convection Heat transfer from the core to the mantle produces slow convection of the mantle material (in the order of centimetres per year)
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Pea-soup analogy
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Mantle convection produces lateral forces at the boundary between the mantle and the crust
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Plates of the Earth’s crust
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Plate motions
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Mantle convection produces lateral forces at the boundary between the mantle and the crust
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Tectonic Boundaries Tectonic Boundaries
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Divergent boundary
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Convergent boundary Subduction
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Transform boundary
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Tectonic Boundaries Tectonic Boundaries Transform: San  Andreas (Strike- Slip fault) Divergent: Red Sea  Rift   (Normal  fault) Convergent: 
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Unformatted text preview: Appalachians Reverse/Thrust Earth stresses Earth stresses Hot Spot ( Hot Spot ( Mantle Mantle thermal Plume) thermal Plume) Center of volcanic activity the Hawaiian Islands result from the slow movement of a tectonic plate across a "fixed" hot spot in the mantle Most active hot spots: Hawaii, Runion, Yellowstone, Galpagos, and Iceland MEASURING AND EVALUATION PLATE TECTONICS MEASURING AND EVALUATION PLATE TECTONICS Kauai Molokai 4.7 1.6 million years, the plate moved from Kauai to Molokai Island (300km) This is the rate of plate motion: 30,000,000 cm 3,1000,000 yr =9.7 cm/yr Direction: west-northwest...
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Chapter Slides - Appalachians Reverse/Thrust Earth stresses...

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