Metamorphic rock is formed when existing rock is transformed under high heat and pressure, which generally destroys any fossils that were in the rock before it was metamorphosed. For example, marble ...

Once their mineral composition changes, the rocks are considered metamorphic, with examples including phyllite, schist, quartzite and marble. Igneous and metamorphic rocks on Earth's surface ...

Examples of metamorphic rocks include marble, which originates from limestone and slate, which originates from clay. Slate is dark grey/green in colour and can be split into thin layers for use as ...