Unformatted text preview: continental drift away from each other. • Plate tectonics/tectonic plate- Separation of Pangaea. • Subduction- One plate dives back into the mantle. Recycles the Earth’s crust. Balanced by sea-floor spreading so that Earth maintains a constant circumference. • Volcanic arc (island and continental)- Continental Arc Volcanoes is known as the Cascade Range. Happening along the Pacific Northwest. Island Arc Volcanoes of Alaska called the Aleutian Islands. Moving north and subducting with the part of the North American crust that is oceanic....
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- Spring '12
- Plate Tectonics, oceanic crust, North American Crust, continental arc volcanoes, down-going crust melts, Mid-ocean ridges- Sea-floor