October
14
/ 2016
The Appalachian Orogeny is one of the geological mountain building events that created the Appalachian Mountains. This orogeny occurred about 325 million years ago and was caused by Africa colliding with North America at a time when these continents did not exist in their current forms. It applied massive stress on what is today the Eastern Seaboard of North America, forming a wide and high mountain chain. The Appalachians likely once reached elevations similar to those of the Alps, Andes, and the Rocky Mountains before they were eroded down to what they are today. The Appalachian Mountains are some of the oldest mountains in the world. Age of the Mammals About sixty-six million years ago, the Appalachian Mountains had been
