Late Devonian brachiopod fossils were preserved as molds in a fine-grained sandstone (Big Creek, Hornell, New York, N 42.364361, W 77.645760). Individual fossil samples like this are the basis for ...

This week's Friday Field Photo is from Pennsylvanian aged (~300 million years old) strata exposed in southern West Virginia. Actually, it's a slab of fine-grained sandstone used to construct a pathway ...

A large geological feature in southern Utah known as the “Double Arch,” the “Hole in the Roof” and sometimes the “Toilet Bowl” has collapsed, National Park Service officials said Friday. No injuries ...

Every material undergoes physical and chemical changes when subjected to the extremes of heat, pressure, and other factors. This article will discuss what happens to the mechanical properties of ...