Here's why:
* Metamorphism: This process involves the transformation of existing rocks (igneous, sedimentary, or even other metamorphic rocks) due to intense heat and pressure.
* Pressure: The weight of overlying rocks creates immense pressure on the rocks below. This pressure causes changes in the mineral composition, texture, and structure of the original rock.
Examples of metamorphic rocks:
* Slate: Formed from shale under pressure.
* Marble: Formed from limestone under pressure and heat.
* Gneiss: Formed from granite under intense pressure and heat.
Let me know if you have any more questions!