Affected by wind or water, say

Usage examples of erosional.

The result would be dust deposits subject to erosional forces of wind and rain, with predictably devastating effects.

Yet you still get this dramatic rolling, erosional profile in the Sphinx enclosure .

You find dinosaur bones in depositional environments that have eroded—not, for the most part, in environments that were erosional in the first place.

He also knew that the sea level was rising, rather than falling, because there was no evidence in the el Dist sediments of an erosional environment, of rivers flowing downhill toward a receding seashore.