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What is a volcano? An opening in the crust of

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Presentation on theme: "What is a volcano? An opening in the crust of"— Presentation transcript:

1 What is a volcano? An opening in the crust of
the earth that produces hot, liquid magma, ash, and gas. Magma is derived from partially melted rocks from subduction zones or mantle plumes.

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3 Where do Volcanoes Occur?
Convergent boundaries: convergent oceanic-continental and convergent oceanic-oceanic. Divergent boundaries: rift valleys and mid-ocean ridges. Intraplate Volcanism: occurring in areas within the plate due to hot spots found under the continents. Ex. Yellowstone and Hawaii.

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11 Mount Kilauea

12 Slow-Moving Aa Flow

13 Pahoehoe (Ropy) Lava Flow

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