Metamorphic rocks that do not exhibit foliation.
Quartzite
Usually have a rougher texture
Foliated and nonfoliated are terms used to describe the texture of metamorphic rocks. Foliated rocks have a banded or layered appearance due to the alignment of minerals, while nonfoliated rocks lack this layered structure and have a more uniform texture.
False. The terms folidated and nonfoliated apply to metamorphic rocks.
A foliated rock will have mineral grains aligned in layers or bands, giving it a striped appearance. In contrast, a nonfoliated rock will have a more uniform texture without visible layers. One way to determine if a rock is foliated or nonfoliated is by examining its texture and observing whether it exhibits a banded structure.
Nonfoliated metamorphic rocks lack a layered or banded structure, unlike foliated rocks. Instead, they typically have a granular or crystalline texture. This texture results from the recrystallization of minerals without the development of preferred orientations, giving the rock a more uniform appearance. Examples of nonfoliated metamorphic rocks include marble and quartzite.
Non-foliated metamorphic rock, like quartzite and marble.
a banded texture
A banded texture
No, sedimentary rocks are classified based on their grain size, composition, and texture, not by whether they are foliated or nonfoliated. Foliation is a feature typically found in metamorphic rocks, not sedimentary rocks.
Nonfoliated rocks are classified primarily based on their mineral composition and texture. Unlike foliated rocks, which exhibit layered or banded structures due to directional pressure, nonfoliated rocks lack such features and typically have a uniform texture. Common examples include marble, which is composed mainly of calcite, and quartzite, formed from quartz sandstone. Classification may also consider the parent rock (protolith) and the conditions of metamorphism.
The Texture term for metamorphic rock which are not banded or layered is non-foliated metamorphic rock. Good examples are marble and quartzite.