ArkOS

Arkose is a type of rock that is made up of little bits of sand, pebbles, and other small pieces of rock that have been stuck together. It's kind of like a really big sandcastle that someone made using different-sized grains of sand and some glue.

The rocks that make up arkose are usually pink or red because they contain a lot of a mineral called feldspar. They can also be found in shades of yellow, gray, and brown depending on the type of rock that the bits of sand and pebbles came from.

Arkose forms in places where there used to be a lot of sand and rocks that got buried by dirt and other materials over time. As the layers of dirt and rocks piled up on top of the sand and rocks, the pressure and heat caused the sand and rocks to stick together and form arkose.

Because arkose is made up of little pieces of rock that have been stuck together, it is not as strong as some other types of rock, like granite. But it can still be used for things like building materials, especially in areas where it is abundant.