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Chapter 18 Vocab

TermDefinition
Volcanism describes all the processes associated
hot spot are unusually hot regions of Earth's mantle where high temperature plumes of magma rises
flood basalt form when lca flows out of long cracks in earth crust.
fissure cracks
conduit lava reaches the surface by traveling through a tube-like structure
vent emerges through an opening
crater at the top of a volcano around the vent is a bowl shaped depression.
caldera can be the magma chamber beneath a volcano empties is a form a major eruption
shield volcano is a mountain with broad gently sloping sides and a nearly circular base.
cinder cone when eruptions eject small pieces of magma into the air
composite volcano are formed of layers of hardened chunks of lava from violent erutions alternating layers of lava that oozed downsloped
Created by: garrettreed
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