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Introduction of Metamorphic Rocks
Metamorphic rocks are made of existing rocks. Due to metamorphic process, existing rock converts into metamorphic rock. Chemical composition of metamorphic rocks are different from the original rocks.
When original rocks comes in contact with high pressure and temperature, metamorphic rocks forms. During metamorphic process, the rock remains mostly solid, but gradually recrystallizes into a new texture or mineral composition. Rough stones can be igneous, sedimentary, or extant metamorphic rocks.
Description
Metamorphic rocks are available in significant quantity. Approx 13 percent of earth’s land surface made of metamorphic rock. This type rock can be categorized based on original rock. Other classifications are based on chemical, mineral composition, and texture.
They are buried far below the surface of the ground and only come to life when they are exposed to the pressure and heat of the rock formations above. Additionally, they can develop as a result of crustal movements such continental collisions, which result in horizontal pressure, friction, and strain. Localized heating of rocks caused by the entrance of hot lava known as magma from the Earth’s interior produces metamorphic rocks. Studies of metamorphic rocks reveal details on the temperatures and pressures present at depths inside the Earth’s crust.
Examples of Metamorphic Rocks
Examples of metamorphic rocks are gneiss, schist, marble, schist, and quartzite. Slate and quartzite slabs are used in the construction of buildings. Marble is also highly prized as a medium for architecture and sculpture.
How Are Metamorphic Rock Formed?
Existing rocks undergo physical or chemical changes at high temperatures to produce metamorphic rocks. Rocks that have been deformed by metamorphic processes vary in texture or mineral makeup.
The bulk composition of rocks can be altered through metasomatic activity. Existing minerals can be dissolved and new minerals can be precipitated by hot fluids flowing through the pores of rocks. The fluid removes the dissolved material from the rock and introduces the new material into it. increase. Obviously, this has the potential to alter the rock’s mineral makeup.
But even if the overall makeup of the rock doesn’t change, alterations in the mineral content can still happen. Because all minerals are only stable within specific ranges of temperature, pressure, and chemical environment.
Uses of Metamorphic Rocks
- In particular, slate shingles are utilized in construction.
- Rock is challenging to mine quartzite because it is so dense and hard. But some quartzite is employed as a benchmark rock, frequently in the form of slabs for walls, floors, or stair treads. About 6% of crushed stone, which is mostly utilized as road materials, is quartzite.
- Additionally regarded as a building and sculpture material is marble.