Types of Volcanoes

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  • Created by: abbie
  • Created on: 30-05-16 15:19
Fissure Eruptions
Occur when an elongated crack in the crust allows lava to spill out over a large area. Found at consecutive margins, basaltic rocks, gentle and persistent eruption.
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Shield Volcanoes
Form gently sloping cones from layers of less viscous lava. Hotspots and where oceanic crust meets oceanic crust. Basaltic rock, gentle and predictable eruptions.
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Calderas
Build up of gases becomes extreme - huge explosion. Destructive margins and hotspots, rhyolite rocks, explosive as pressure builds up, removes top leaving an opening several km wide.
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Cinder Cone
Small cones when ash and cinder has built into a symmetrical cone. Volcanic bombs ejected from crater, basaltic and andesitic material, viscous lava - short and thick flows.
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Composite Volcanoes
Classic pyramid shaped volcanoes, destructive margins on land, andesitic rocks, explosive eruption and subsequent layers of lava and ash.
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Acid or Dome Volcanoes
Steep sided volcanoes formed from very viscous lava. Lava cannot travel far and builds up a convex cone shape. Destructive margins, rhyolite rocks, explosive eruption as pressure builds up in a blocked vent.
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Other cards in this set

Card 2

Front

Form gently sloping cones from layers of less viscous lava. Hotspots and where oceanic crust meets oceanic crust. Basaltic rock, gentle and predictable eruptions.

Back

Shield Volcanoes

Card 3

Front

Build up of gases becomes extreme - huge explosion. Destructive margins and hotspots, rhyolite rocks, explosive as pressure builds up, removes top leaving an opening several km wide.

Back

Preview of the back of card 3

Card 4

Front

Small cones when ash and cinder has built into a symmetrical cone. Volcanic bombs ejected from crater, basaltic and andesitic material, viscous lava - short and thick flows.

Back

Preview of the back of card 4

Card 5

Front

Classic pyramid shaped volcanoes, destructive margins on land, andesitic rocks, explosive eruption and subsequent layers of lava and ash.

Back

Preview of the back of card 5
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