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

Quizplus · Accepted Answer

The region of thermally metamorphosed rock surrounding a cooled pluton is called an aureole. This occurs due to the heat transfer from the pluton to the surrounding country rock, causing changes in the mineralogy and texture of the rocks. Shear zones are areas of high strain where rocks have been deformed and sheared, while chilled margin refers to the fine-grained edge of the pluton that has cooled rapidly. "Metamorphic ring" is not a commonly used term in geology.

Consult the Figure Below