The Ordovician Bellefonte Formation (Obf) is a mapped bedrock unit in central Pennsylvania.
Read more about Bellefonte Formation: Description, Age
Famous quotes containing the word formation:
“Those who were skillful in Anatomy among the Ancients, concluded from the outward and inward Make of an Human Body, that it was the Work of a Being transcendently Wise and Powerful. As the World grew more enlightened in this Art, their Discoveries gave them fresh Opportunities of admiring the Conduct of Providence in the Formation of an Human Body.”
—Joseph Addison (1672–1719)