What was the direction of compression that formed the foliation in the image below?

A)top and bottom,pressing inward
B)both sides,pressing inward
C)top and bottom,pulling outward
D)in and out of the image,pulling outward

Question

What was the direction of compression that formed the foliation in the image below?

A)top and bottom,pressing inward 
B)both sides,pressing inward 
C)top and bottom,pulling outward 
D)in and out of the image,pulling outward

Quizplus · Accepted Answer

The foliation in the image appears to be oriented perpendicular to the direction of compression, indicating a top and bottom compression that is pressing inward. This is consistent with the formation of foliation in rocks such as gneiss, which typically form under conditions of differential stress with one direction of compression.

What Was the Direction of Compression That Formed the Foliation