Metamorphic Rocks Facts

Metamorphic Rocks Facts
Rocks are made up of one or more minerals. Although different rocks can contain the same minerals, they are classified based on the way in which they were formed. Metamorphic rocks form when existing rocks are exposed to heat and pressure deep within the Earth's surface.
Interesting Metamorphic Rocks Facts:
Marble and slate are examples of metamorphic rock.
Metamorphic rock is formed under extreme pressure combined with heat over time.
Metamorphic rocks are so called because they always begin as another type of rock.
When slate forms, some of the clay from the original rock is replaced by the mineral mica.
Metamorphic rock can originate not only as igneous and sedimentary rock but also other types of metamorphic rock.
During contact metamorphism, broken down pieces of rock near the Earth's surface is altered by magma.
During regional metamorphism, rocks buried deep within the Earth are altered by magma chambers.
Foliated rocks are types of metamorphic rock that have parallel bands of grain.
Non-foliated rocks are types of metamorphic rock that have no arrangement or bands of grain.
Marble is a type of metamorphic rock that originates from limestone.
Schist is a type of metamorphic rock that can originate from slate which is another type of metamorphic rock.
The word metamorphic literally means "changed form".
Slate, a metamorphic rock, can form from shale, clay or mudstone.
The Taj Mahal in India is made entirely of different types of marble, a metamorphic rock.
Serpentine is a type of metamorphic rock that originates as the igneous rock periodite.

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