GOL 105 EXAM 2 LATEST
____ tend to be horizontal concordant bodies that form when magma
exploits weaknesses between sedimentary beds or other rock structures -
ANSWERS-Sills
While dikes and Sills can occur as solitary bodies, dikes tend to form
and roughly parallel groups called ________ - ANSWERS-Dike swarms
_________ occurs when igneous rocks cool and develop shrinkage
fractures that produce elongated, pillar-like columns that most often
have six sides - ANSWERS-Columnar Jointing
Largest intrusive igneous protons are ________ - ANSWERS-Batholiths
(depth stone)
Smaller plutons are termed ____ - ANSWERS-Stocks
_______ igneous rock forcibly injected between sedimentary strata so as
to arch the beds above while leaving those below relatively flat (named
by G.K Gilbert) - ANSWERS-Laccoliths
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, GOL 105 EXAM 2 LATEST
Plutons that contains suspended blocks of country rock called ______ -
ANSWERS-Xenoliths (stranger stone)
Erupted magma is called - ANSWERS-lava
Geologists refer to quiescent (nonviolent) eruptions that produce
outpourings of fluid lava as _________ __________ (effus = pour
forth). - ANSWERS-effusive eruptions
Two primary factors that determine how magma erupts are its ______
and _______ - ANSWERS-Viscosity , gas content.
______ is a measure of a fluids mobility. - ANSWERS-Viscosity
(viscos=sticky)
The more _____ in magma the greater its viscosity - ANSWERS-silica
Typically the most abundant gases in magma are ______ and ______ -
ANSWERS-Water vapor, carbon dioxide
Because highly gaseous magmas expel fragmented lava at nearly
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____ tend to be horizontal concordant bodies that form when magma
exploits weaknesses between sedimentary beds or other rock structures -
ANSWERS-Sills
While dikes and Sills can occur as solitary bodies, dikes tend to form
and roughly parallel groups called ________ - ANSWERS-Dike swarms
_________ occurs when igneous rocks cool and develop shrinkage
fractures that produce elongated, pillar-like columns that most often
have six sides - ANSWERS-Columnar Jointing
Largest intrusive igneous protons are ________ - ANSWERS-Batholiths
(depth stone)
Smaller plutons are termed ____ - ANSWERS-Stocks
_______ igneous rock forcibly injected between sedimentary strata so as
to arch the beds above while leaving those below relatively flat (named
by G.K Gilbert) - ANSWERS-Laccoliths
END OF
PAGE
1
, GOL 105 EXAM 2 LATEST
Plutons that contains suspended blocks of country rock called ______ -
ANSWERS-Xenoliths (stranger stone)
Erupted magma is called - ANSWERS-lava
Geologists refer to quiescent (nonviolent) eruptions that produce
outpourings of fluid lava as _________ __________ (effus = pour
forth). - ANSWERS-effusive eruptions
Two primary factors that determine how magma erupts are its ______
and _______ - ANSWERS-Viscosity , gas content.
______ is a measure of a fluids mobility. - ANSWERS-Viscosity
(viscos=sticky)
The more _____ in magma the greater its viscosity - ANSWERS-silica
Typically the most abundant gases in magma are ______ and ______ -
ANSWERS-Water vapor, carbon dioxide
Because highly gaseous magmas expel fragmented lava at nearly
END OF
PAGE
2
