Consult the figure below.Compared with low-grade metamorphic rocks,high-grade rocks ________.
A)always contain more quartz and feldspar
B)are produced close to the surface but high in the stratigraphic column
C)are produced at greater temperatures and pressures
D)are produced at cooler temperatures but greater pressures

Question

Consult the figure below.Compared with low-grade metamorphic rocks,high-grade rocks ________. 
A)always contain more quartz and feldspar 
B)are produced close to the surface but high in the stratigraphic column 
C)are produced at greater temperatures and pressures 
D)are produced at cooler temperatures but greater pressures

Quizplus · Accepted Answer

High-grade metamorphic rocks are produced at greater temperatures and pressures compared to low-grade metamorphic rocks. The composition of the rock does not necessarily depend on the grade of metamorphism. The location of formation varies and is not a significant factor in distinguishing between low and high-grade metamorphic rocks.

Consult the Figure Below