Question

Which of the following is required for the formation of foliation in metamorphic rock?

1) differential stress
2) platy or elongate minerals
3) high water content
4) answers 1 and 2
5) answers 2 and 3

Answer 1

Differential stress and platy or elongate minerals are required for the formation of foliation in metamorphic rock.

Step-by-step explanation:

The formation of foliation in metamorphic rocks requires differential stress and the presence of platy or elongate minerals. High water content is not necessary for the formation of foliation. Therefore, the correct answer is 1) differential stress and 2) platy or elongate minerals.