Here's why:
* Sedimentary rock is formed from the accumulation and cementation of sediments.
* Metamorphic rock is formed when existing rocks (like sedimentary rock) are transformed by heat and pressure without melting completely. The minerals within the rock change and rearrange, resulting in a new texture and sometimes even new minerals.
Examples of metamorphic rocks formed from sedimentary rocks include:
* Slate: Formed from shale (a sedimentary rock)
* Marble: Formed from limestone (a sedimentary rock)
* Quartzite: Formed from sandstone (a sedimentary rock)
