Here's why:
* Clastic: Sandstone is composed of fragments (clasts) of other rocks.
* Medium-grained: The individual grains in sandstone are typically between 0.0625 mm and 2 mm in diameter, fitting into the medium-grained category.
* Sedimentary: Sandstone forms from the accumulation and cementation of sand-sized grains.
Other examples of medium-grained clastic sedimentary rocks include:
* Arkose: Similar to sandstone but with a significant amount of feldspar grains.
* Greywacke: A darker, often poorly sorted sandstone with a significant amount of clay and rock fragments.
Let me know if you'd like to learn more about any of these rocks!
