Not all magmas have the same initial composition.Which of the following is LEAST likely to cause variation in the composition?
A) source of magma
B) amount of partial melting
C) amount of magma mixing
D) depth in the Earth
Correct Answer:
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Q1: If the volatile content of magma is
Q2: When rock is partially melted,the chemistry of
Q3: Radioactive isotopes,differentiation of Earth's iron core,gravity-driven compression,and
Q4: Volatiles refer to substances that _.
A)crystallize most
Q5: All other factors being equal,intrusive rocks that
Q6: The difference between lava and magma is
Q6: All of the Earth's internal heat was
Q8: Important volatiles in magmas include _.
A)iron- and
Q13: A majority of the melts in the
Q20: Igneous rocks _.
A)are formed through the freezing
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