The rain washed away much of the topsoil, leaving behind gullies and exposing rocks and tree roots.

This large, regional fold exposes rocks of Pennsylvanian through Cretaceous age.

Extensive areas of desert or semi-arid land tend to expose fossil-bearing rocks at the surface.

All of these rocks are tilted, exposing older rocks.

Geological uplift and weathering can subsequently expose metamorphic rocks, which are sometimes seen in the cores of deeply eroded mountains.

The central denuded area, east of the Llano, resembles the east-central section of the plains in exposing older rocks.

In geology, eduction is a process in which the Earth crust spreads sideways, exposing deep-seated rocks.

The uplift of the nearby Wind River Range 60 million years ago exposed sedimentary rocks that were eroded by streams.

In the simplest terms, uplift of mountains exposes Ca-bearing rocks to chemical weathering and releases Ca into surface water.

Forearcs undergoing subduction erosion typically expose igneous rocks.