Here's why:
* Metamorphism: This term comes from the Greek words "meta" (change) and "morph" (form). Metamorphism describes the process of changing existing rocks (igneous, sedimentary, or even other metamorphic rocks) through heat and pressure.
* Heat and Pressure: These forces cause the minerals within the rock to recrystallize and rearrange, leading to changes in texture, mineral composition, and often the overall appearance of the rock.
Examples of metamorphic rocks:
* Marble: Formed from limestone (sedimentary) under heat and pressure.
* Slate: Formed from shale (sedimentary) under pressure.
* Gneiss: Formed from granite (igneous) or other rocks under intense heat and pressure.
Let me know if you have any other questions!
