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Volcanic Landforms

Volcanic Landforms. Landforms From Lava and Ash. Shield Volcanoes Cinder Cone Volcanoes Composite Volcanoes Lava Plateaus Calderas Soils. Shield Volcanoes. Formed from lava flows Wide Gently-sloped Mountain Low-viscosity lava. Cinder Cone Volcanoes. Formed from pyroclastic flows

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Volcanic Landforms

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  1. Volcanic Landforms

  2. Landforms From Lava and Ash • Shield Volcanoes • Cinder Cone Volcanoes • Composite Volcanoes • Lava Plateaus • Calderas • Soils

  3. Shield Volcanoes • Formed from lava flows • Wide • Gently-sloped • Mountain • Low-viscosity lava

  4. Cinder Cone Volcanoes • Formed from pyroclastic flows • Steeply-sloped • Cone-shaped • Hill or small mountain • High viscosity magma

  5. Composite Volcanoes • Formed from both lava flows and pyroclastic flows • Layers of pyroclastic material and lava • Gently sloped base and steep peak • Mountain • Snow on peak all year long

  6. Lava Plateaus • High, level areas from lava flows • Lava flows out of cracks • Low viscosity • “Floods” of lava

  7. Caldera • Huge hole left by the collapse of a volcanic mountain • Fills with water

  8. Soils • Volcanic material is loaded with minerals • Very fertile (able to support plant growth)

  9. Landforms From Magma • Volcanic Necks • Dikes • Sills • Batholiths • Dome Mountains

  10. Volcanic Necks • Leftover pipe from an eroded volcano

  11. Dike • Magma intrusion that cuts through rock layers • Can be thick or thin

  12. Sill • Magma intrusion that lies parallel with rock layers • Can be thick or thin

  13. Batholith • HUGE block of cooled magma that can cover huge amounts of area • Gets lifted up through plate tectonics

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