The picture above shows an outcrop along Interstate 70 in Utah. The green arrow points to a person, for scale. The pink arrows point
to the ends of an interesting surface. Some rocks are below this surface, and other rocks above it.

What happened to make this outcrop?
The rocks below were deposited, hardened, turned on end, eroded to make an unconformity with a soil developing on top, and then other rocks were deposited on top of the soil.