Here's why:
* Clastic: This means the rock is made up of fragments of other rocks (clasts).
* Medium-grained: The size of the clasts in sandstone falls within the medium-grained range, typically between 0.0625 mm and 2 mm in diameter.
Other examples of medium-grained clastic sedimentary rocks include:
* Arkose: Similar to sandstone, but with a higher proportion of feldspar.
* Wacke: A sandstone with a significant amount of mud (silt and clay) mixed in.
Let me know if you have any other questions!