Question

what are two categories of metamorphic rocks?

Answer 1

foliated and non-foliated

Answer 2

FOLIATED AND NON FOLIATED

Answer 3

[AI-generated answer — Explain Bot]

The two main categories of metamorphic rocks are foliated and non-foliated rocks.

Foliated rocks have a layered or banded appearance, which is a result of the minerals in the rock aligning themselves in parallel planes due to intense pressure or compression during metamorphism. This alignment of minerals gives the rock a distinct texture. Some examples of foliated metamorphic rocks include slate, schist, and gneiss.

Non-foliated rocks, on the other hand, do not have a layered or banded structure. They form under conditions where pressure acts equally in all directions, preventing the minerals from aligning in any particular pattern. Non-foliated metamorphic rocks have a more uniform texture. Examples of non-foliated rocks include marble, quartzite, and hornfels.

To determine the category of a metamorphic rock, you would need to examine its texture and mineral composition.