1
Q
Pyroclastic solids
A
erupted bits of rock
2
Q
3 types of extrusive rock:
Aka, main types of magma
A
rhyolitic = felsic andesite = intermediate basaltic = mafic
3
Q
3 influencers of magma
A
1) magma silica content
2) temperature
3) amount of dissolved gas it contains
4
Q
Tephra
A
the large number of rapidly expanding gas bubbles in the foam fragments the magma produces
5
Q
Pyroclastic flow
A
high-speed avalanche of hot ash, rock fragments, and gas that can reach temps up to 800 C
Geology 101
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