Here's how it works:
* Original Rock: Metamorphic rocks start as either igneous or sedimentary rocks.
* Heat and Pressure: These original rocks are then subjected to intense heat and pressure deep within the Earth's crust. This can happen due to tectonic plate movements, volcanic activity, or burial under other rocks.
* Transformation: The heat and pressure cause the minerals in the original rock to recrystallize and change their arrangement, creating a new type of rock with different properties.
Examples of metamorphic rocks:
* Marble: Formed from limestone (sedimentary rock)
* Slate: Formed from shale (sedimentary rock)
* Gneiss: Formed from granite (igneous rock)
* Quartzite: Formed from sandstone (sedimentary rock)
