Volcanoes Flashcards
What is Basalt
low-viscosity mafic lavas
What is Rhyolite
high-viscosity felsic lavas
intermediate and between mafic and felsic magma
What composition of magmas do you
typically find at convergent
boundaries?
Basaltic + Andesitic + Rhyolitic
What is shield volcanoes
Frequent thin floats; generally basaltic
What is stratovolcano
what’s the nickname
Alternating layers of pyroclastic material and
lava flows
Composite
What is Volcanic domes
Rounded, steep-sided; felsic; often plug vents
What is crater
Pit at the summit of most volcanoes.
What is caldera
Collapse of the volcanic structure, leaving a
large depression
what is large igneous province
Rapid, predominately mafic igneous rocks
What is Lahar
mudflow of wet volcanic debris
what is pyroclastic flow
cloud of dust, ash, and gas that
rolls down the side of the volcano
What is flank collapse
structural failure of side of a volcano
Ash fall/clouds
what is tsunami
tidal wave
what is ash fall
is clouds
