geological formation
formation **

The geological formations around the area take their name from the town.

It was about two inches deep and looked almost like some sort of geological formation.

Information on the geological formations of the region are also detailed.

I was starting to recognize geological formations on the surface.

The exhibit starts with the geological formations of the area.

The primary attractions of the park are its geological formations.

A second quarry (in the same geological formation) was opened.

The general geological formation of the district is plain and coastal.

The topography is almost plain, with no major geological formation.

This is an unusual geological formation open to the public for an admission fee.