Sandstone is the most common type of rock in the Great Basin, often forming the base of the region’s diverse landscape.

The Great Basin is characterized by a wide range of geological formations, but sandstone is the most prevalent rock type. This sedimentary rock forms from layers of sand that have been compacted over millions of years. Sandstone formations are common in the region's deserts, cliffs, and plateaus, and they create dramatic landscapes like those seen in the Basin and Range province. While other types of rock like granite, basalt, and limestone are also present, sandstone’s widespread occurrence shapes much of the area’s terrain.