A/an __________ is a crater formed by the collapse of a magma chamber.
A) ash-flow tuff
B) cinder cone
C) caldera
D) impact crater
Correct Answer:
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Q21: Continental crust is typically of _ composition.
A)
Q22: When an ash flow comes to a
Q23: If basaltic magma is too viscous to
Q24: Most basaltic magma erupts at the Earth's
Q25: As lava cools and solidifies from the
Q27: The most catastrophic volcanic explosions occur when
Q28: Which of the following tectonic environments does
Q29: Oceanic crust is typically of _ composition.
A)
Q30: Lava with a smooth, ropy surface is:
A)
Q31: A _ is a pluton with an
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