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Lastly, the process ends by which clay, sand, and other sediments on the ocean's or other bodies of water's bottom are gradually compressed into rocks by the weight of overlying sediments.
They can also form when the rock is composed of rough minerals, in which individual crystals no longer align since they are no longer in any particular dimension.
Non-foliated rocks are formed as a result of contact metamorphism. Contact metamorphism is when rock structure and minerals change as a result of contact with magma. Non-foliated rocks form when pressure remains constant or is relatively low near the surface.
APPLICATION:Examples of non foliated rocks include quartzite and marble. Today, Marble is frequently utilised in the production of floor tiles, columns, and sculptures.
APPLICATION:Today, Gneiss has several use as a building material, including flooring, decorative stones, gravestones, building facing stones, and work surfaces.
Foliated rocks are formed when pressure causes flat or elongated minerals inside a rock to align. These rocks form a sheet-like structure that reflects the direction the pressure was put.Examples of foliated metamorphic rocks include phyllite and gneiss.
Foliated metamorphic rocks are often formed as a result of regional metamorphism that occurs within the core of a folded mountain range. They are categorised based on the size of the main mineral grains.

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