View Single Post
Old 03-26-2010, 11:45 AM
CinciVol CinciVol is offline
Senior Member
Join Date: Jun 2007
Location: Knoxville
Posts: 184

If I remember my geology from my days at UT correctly, the most recent glaciation terminated right around what is now Cincinnati, Ohio around 20,000 years ago. That puts it 300+ miles north of the Smokies. However, as Jim noted, the position of that thousand ft thick ice sheet "just" to the north and the generally cooler global climate that caused the ice sheets to spread south would have had a dramatic effect on the biology and geomorphology in the smokies. For example, the "boulder fields" that you see in high elevation areas in the smokies are thought to be the result of frost heaving of the rocks during a period of time when the Smokies had a high elevation "tree line". The image I think of is the New Hampshire mountains today that are "bald" at high elevations. The vegetation beneath the tree line would have been boreal (think Canadian shield).
Reply With Quote