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 formed by the top and bottom of the rock mass compressing inward towards each other, resulting in the elongation and alignment of minerals in a parallel fashion. This type of compression is known as "top-to-bottom" or "top-and-bottom" compression.

What Was the Direction of Compression That Formed the Foliation