what forces cause sedimentary rocks to be transformed into metamorphic rocks?
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Sediments composed of weathered rock lithify to form sedimentary rock, which then becomes metamorphic rock under the pressure of Earth's crust. When tectonic forces thrust sedimentary and metamorphic rocks into the hot mantle, they may melt and be ejected as magma, which cools to form igneous, or magmatic, rock.
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The forces that cause sedimentary rocks to be transformed into metamorphic rocks are endogenic forces.
- Endogenic forces are those forces that occur inside the surface of the earth. They are responsible for volcanic eruptions, earthquakes etc.
- For the formation of metamorphic rocks, several chemical reactions occur inside sedimentary rocks which require high energy.
- Endogenic forces such as intense pressure and high temperature provide energy to sedimentary rocks that are buried under the Earth and convert them into metamorphic rocks.
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