Stop the Continent, I Want to Get Off! Plate Tectonics 1.
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Transcript of Stop the Continent, I Want to Get Off! Plate Tectonics 1.
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Stop the Continent, Stop the Continent, I Want to Get Off!I Want to Get Off!
Plate Tectonics 1
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Alfred WegenerAlfred Wegener
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GlossopterisGlossopteris
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Continental DriftContinental Drift
• Pangea Laurasia Gondwanaland
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Mountain RangesMountain Ranges
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PaleomagnetismPaleomagnetism
• Magnetite - Fe3O4
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MagnetismMagnetism
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MOR = Mid-Oceanic MOR = Mid-Oceanic RidgeRidge
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Iceland – The MOR Rises Iceland – The MOR Rises Above the SeaAbove the Sea
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“Hot spots” are places in the mantle that are hotter than the surrounding material. They are something like a lava lamp, and it is speculated that they may function to release heat from the core. They are fixed in place for millions of years, so they form chains of volcanoes as the moving plates pass over them. Because they are fixed in place, sometimes they are on the edges of a plate, but other times they are far from the edges.
Hot SpotsHot Spots
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Hot SpotsHot Spots
The Hawaiian IslandsThe Hawaiian Islands
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The Yellowstone Hot The Yellowstone Hot SpotSpot
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Convection in the mantleConvection in the mantledrives the plate motiondrives the plate motion
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3 Types of Plate 3 Types of Plate BoundariesBoundaries
• A) Divergent = moving away from each other
• B) Convergent = moving toward each other
• C) Transform = sliding past each other
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Next Week:
Living on the EdgeLiving on the EdgePlate Tectonics 2Plate Tectonics 2
We will discuss the three types of boundaries and the processes and
landforms that occur there.