Question

Foliated metamorphic textures form under which of the following circumstances?

1) convergent plate margins
2) regional metamorphism
3) differential pressure
4) both B and C
5) all of the above

Answer 1

Foliated metamorphic textures form due to regional metamorphism and differential pressure, often at convergent plate margins, where tectonic stresses and mountain-building processes occur. Option 5 is correct.

Step-by-step explanation:

Foliated metamorphic textures form under circumstances that include regional metamorphism and differential pressure. These conditions are commonly found in areas like convergent plate margins, where immense pressures resulting from tectonic plate collisions cause minerals within rock to align into planes or bands, creating the characteristic foliated appearance.

Regional metamorphism involves a widespread area of metamorphism under increased pressures and temperatures, often associated with mountain-building processes. Differential pressure, related to tectonic stress, leads to variations in pressure intensity within a rock body, contributing to the development of foliation.

Therefore, the correct answer is 5) all of the above, as foliation can occur at convergent plate margins, under regional metamorphism, and due to differential pressure.