The metamorphism of coal to anthracite occurs due to
A) high pressure and high temperature.
B) high temperatures.
C) contact metamorphism.
D) crystallization of organic matter.
Correct Answer:
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Q152: Metamorphism caused by the alteration of rock
Q153: The metamorphic equivalent of limestone is
A)gneiss.
B)marble.
C)quartzite.
D)schist.
Q154: All of the following occur during metamorphism
Q155: Zoned sequences of minerals are a characteristic
Q156: What effect do fluids have on metamorphism?
Q158: Limestone may be metamorphosed into
A)schist.
B)marble.
C)quartzite.
D)gneiss.
Q159: Distinguish between metamorphic foliation and sedimentary layering.
Q160: What are the chief types of metamorphic
Q161: Sedimentary rocks subjected to melting become
A)lithified.
B)metamorphic rocks.
C)igneous
Q162: Rocks formed by cooling from a molten
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