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1. www.britannica.com › science › metamorphic-rockMetamorphic rock | Definition, Formation, & Facts | Britannica

   www.britannica.com › science › metamorphic-rock

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   Aug 29, 2024 · Metamorphic rock, any rock that results from the alteration of preexisting rocks in response to changing conditions, such as variations in temperature, pressure, and mechanical stress, and the addition or subtraction of chemical components.

   • Major Features

     Metamorphic rock - Foliated, Textures, Minerals: The most...

   • Metamorphic Facies

     Metamorphic rock - Facies, Pressure, Heat: Metamorphic...

   • Structural Features

     Metamorphic rock - Foliations, Textures, Deformations:...

   • Zeolite Facies

     Metamorphic rock - Zeolite Facies, Minerals, Textures: In...

   • Pressure, Temperature, Time

     Metamorphic rock - Pressure, Temperature, Time: Interaction...

   • Regional Metamorphism

     Metamorphic rock - Regional, Foliated, Pressure: Regional...

   • Retrograde Metamorphism

     Metamorphic rock - Retrograde Metamorphism: In general, the...

   • Metamorphic Variables

     Metamorphic rock - Pressure, Temperature, & Deformation:...

2. People also ask

   What are metamorphic rocks?

   • Metamorphic rocks start out as other rocks that undergo physical and chemical changes due to extreme conditions deep in the Earth’s crust. Metamorphic rocks represent one of the three major classes of rocks, the others being igneous and sedimentary. Each class has its unique formation processes, characteristics, and significance in Earth’s geology.

   Metamorphic Rocks - Formation, Types, Examples - Science Notes and …

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   Is granite a metamorphic rock?

   • Granite is an igneous rock that forms when magma cools relatively slowly underground. It is usually composed primarily of the minerals quartz, feldspar, and mica. When granite is subjected to intense heat and pressure, it changes into a metamorphic rock called gneiss. Slate is another common metamorphic rock that forms from shale.

   Metamorphic Rocks - National Geographic Society

   www.nationalgeographic.org/encyclopedia/metamorphic-rocks/

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   What is the difference between sedimentary and metamorphic rocks?

   • Sedimentary rocks were originally sediments, which were compacted under high pressure. Igneous rocks formed when liquid magma or lava — magma that has emerged onto the surface of the Earth—cooled and hardened. A metamorphic rock, on the other hand, began as a rock—either a sedimentary, igneous, or even a different sort of metamorphic rock.

   Metamorphic Rocks - National Geographic Society

   www.nationalgeographic.org/encyclopedia/metamorphic-rocks/

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   What are some examples of metamorphic rocks?

   • Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble. Some kinds of metamorphic rocks -- granite gneiss and biotite schist are two examples -- are strongly banded or foliated. (Foliated means the parallel arrangement of certain mineral grains that gives the rock a striped appearance.)

   What are metamorphic rocks? | U.S. Geological Survey - USGS.gov

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3. www.usgs.gov › faqs › what-are-metamorphic-rocksWhat are metamorphic rocks? | U.S. Geological Survey - USGS.gov

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   Metamorphic rocks are rocks that have changed from their original form due to heat, pressure, or fluids. Learn how metamorphism works, what are the common types of metamorphic rocks, and how to identify them.

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4. Videos

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     Introduction to Metamorphic Rocks

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     Metamorphic Rocks

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     Identifying Metamorphic Rocks -- Earth Rocks!

     Jun 26, 2014

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5. en.wikipedia.org › wiki › Metamorphic_rockMetamorphic rock - Wikipedia

   en.wikipedia.org › wiki › Metamorphic_rock

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   The study of metamorphic rocks (now exposed at the Earth's surface following erosion and uplift) provides information about the temperatures and pressures that occur at great depths within the Earth's crust. Some examples of metamorphic rocks are gneiss, slate, marble, schist, and quartzite.

6. sciencenotes.org › metamorphic-rocks-formationMetamorphic Rocks – Formation, Types, Examples

   sciencenotes.org › metamorphic-rocks-formation

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   Feb 24, 2024 · Metamorphic rocks are rocks that change from other rocks due to heat, pressure, or fluids deep in the Earth's crust. Learn about the processes, properties, and examples of metamorphic rocks and how they differ from igneous and sedimentary rocks.

7. www.nationalgeographic.org › metamorphic-rocksMetamorphic Rocks - National Geographic Society

   www.nationalgeographic.org › metamorphic-rocks

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   Oct 19, 2023 · Metamorphic rocks are formed when existing rocks change into a new type due to high heat, pressure, or fluid. Learn about the conditions, examples, and processes of metamorphic rocks in this article.

8. www.sciencefacts.net › metamorphic-rocksMetamorphic Rocks – Definition, Formation, Types, & Examples

   www.sciencefacts.net › metamorphic-rocks

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   Feb 2, 2023 · Metamorphic rocks are formed when existing rocks change due to heat, pressure, or chemical changes. They can be foliated or non-foliated, and have various uses and examples.

9. geology.com › rocks › metamorphic-rocksMetamorphic Rocks | Pictures of Foliated and Non-Foliated Types

   geology.com › rocks › metamorphic-rocks

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   Metamorphic rocks are rocks that have been altered by heat, pressure, and chemical processes. Learn about the two types of metamorphic rocks (foliated and non-foliated) and see photos of common examples such as gneiss, marble, and slate.