Convergent Plate Boundaries

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This video describes the physical features that can be observed at three different types of convergent plate boundaries and explains the geologic processes that produce these features. We characterize the distribution of earthquakes and volcanoes associated with convergent boundaries and relate them to subduction of the cold descending plate and the addition of water to the hot overriding plate. We describe the difference between a volcanic arc and an island arc, and discuss why the crust is much thicker where to slabs of continental lithosphere collide. Finally, we use hands and oven mitts to produce simple analogs of the three convergent boundary types. Really.

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plate tectonics, earthquakes, and volcanoes

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