What Event Produced The Appalachian Mountains?
What Event Produced The Appalachian Mountains? Finally, approximately 250 million years ago, the Alleghanian mountain-building event occurred as ancestral Africa collided with North America to create the central and southern Appalachians during the Permian (Figure 1.16, Figure 1.17). When were the Appalachian Mountains formed? A new study finds that the process that built the Appalachian