Ohio was born billions of years ago, during a time when ancient minicontinents crystallized and then merged into larger continents. Its youth was marked by the coming and going of oceans and the advent of life from ocean to land. The Buckeye State matured when ice sheets scoured its landscape. This storyline is writ large and small in Ohio�s rocks, from its flat till plains to the rumpled and hollowed landscape of the Appalachian Plateau.
In...