Consult the figure below.The region of thermally metamorphosed rock surrounding a cooled pluton is called a (n)
A) shear zone.
B) aureole.
C) oriole.
D) metamorphic ring.

Question

Consult the figure below.The region of thermally metamorphosed rock surrounding a cooled pluton is called a (n) 
A) shear zone. 
B) aureole. 
C) oriole. 
D) metamorphic ring.

Quizplus · Accepted Answer

The region of thermally metamorphosed rock surrounding a cooled pluton is called an aureole. This happens due to the heat generated by the pluton which causes the surrounding rocks to recrystallize and change their mineralogy, forming metamorphic rocks. Shear zones are areas where two blocks of rock have moved past one another in a fault. Oriole is not a geological term. Metamorphic ring is not a commonly used term for this phenomenon.

Consult the Figure Below