Begin Collision Course. The energy and force from the Earth’s interior slowly put the pre-continents of Africa and North America on a collision course.
Initial Collision. As they continued to come together, ocean islands smashed into the North American continent.
Mountain building. The continents converged and eventually collided about 300 million years ago. The steady but unimaginable force of the two colliding masses buckled and fractured the Earth, creating the Appalachian mountain chain to the west.
Creation of magma pool. The extreme pressure and heat unleashed from the collision created melted rock or pooling magma below the Earth’s surface. Among the hundreds of magma pools along the Appalachian, one magma pool had the distinction of becoming the future Stone Mountain.
Magma cools. After a few years of cooling, Stone Mountain solidified eight to ten miles below the Earth’s surface.
Erosion of surrounding land. Stone Mountain granite is more resistant to the erosion than the surrounding countryside. For 285 million years, the eight to ten miles of land above the mountain wore away, leaving the Stone Mountain standing almost 800 feet high.
Next page, Stone Mountain’s location, how to get there, and interesting souvenirs