Metamorphic Rock
Metamorphic rocks form beneath the surface of the earth, they change or metamorphosis from the intense heat and pressure. They have ribbonlike layers.
What rock has ribbon-like layers?
Ribbon-like layers are often typical of metamorphic rocks where the minerals grow in layers in response to pressure. Bands and layers of crystals are usually an indication of a metamorphic rock.
What process creates ribbon-like layers?
Metamorphic rocks have been heated and squashed. This can lead the minerals in them to line up, creating ribbon-like layers called bands. These rocks are called foliated metamorphic rocks. You can see these bands in gneiss.