Here's a breakdown:
* Mud and clay silt: These are fine-grained sediments, meaning they are made up of very small particles.
* Cementation: This is the process where minerals dissolved in water precipitate out between the sediment particles, binding them together.
* Shale: The resulting rock, formed from cemented mud or clay silt, is known as shale. It is a very common sedimentary rock.
It's worth noting that mudstone is a very similar rock, and sometimes the terms shale and mudstone are used interchangeably. However, shale typically has a finer grain size and often displays layering (called "fissility") that allows it to break into thin sheets.
