If clay minerals in a sedimentary rock were buried at a depth where subsurface temperatures exceeded 200C, which common metamorphic mineral would they become?
A) Quartz
B) Muscovite
C) Amphibole
D) Plagioclase
Question 2
________ is the process by which a rock changes form or mineral content as a result of environmental changes such as heat and pressure.
A) Rifting
B) Precipitation
C) Metamorphism
D) Foliation