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Volcanic Landforms
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Landforms From Lava and Ash
Shield Volcanoes Cinder Cone Volcanoes Composite Volcanoes Lava Plateaus Calderas Soils
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Shield Volcanoes Formed from lava flows Wide Gently-sloped Mountain
Low-viscosity lava
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Cinder Cone Volcanoes Formed from pyroclastic flows Steeply-sloped
Cone-shaped Hill or small mountain High viscosity magma
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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
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Lava Plateaus High, level areas from lava flows
Lava flows out of cracks Low viscosity “Floods” of lava
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Caldera Huge hole left by the collapse of a volcanic mountain
Fills with water
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Soils Volcanic material is loaded with minerals
Very fertile (able to support plant growth)
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Landforms From Magma Volcanic Necks Dikes Sills Batholiths
Dome Mountains
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Volcanic Necks Leftover pipe from an eroded volcano
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Dike Magma intrusion that cuts through rock layers
Can be thick or thin
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Sill Magma intrusion that lies parallel with rock layers
Can be thick or thin
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Batholith HUGE block of cooled magma that can cover huge amounts of area Gets lifted up through plate tectonics
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Dome Mountain Magma cools underground Gets lifted up Looks like a dome
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Geothermal Activity Hot Springs Geysers Geothermal Energy
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Hot Springs Water heated by magma Rises to the surface of the Earth
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Geyser Hot spring that has a plugged up vent/opening Traps the gas
Causes the water to explode..
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Geothermal Energy Water heated by magma Water trapped Turns turbine
Makes energy
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