Describe Pangaea and its breakup and explain the physical evidence that crustal drifting is continuing today. What was Pangaea? What happened to it during the past 225 million years? Briefly review...

Describe Pangaea and its breakup and explain the physical evidence that crustal drifting is continuing today. What was Pangaea? What happened to it during the past 225 million years?

Briefly review the history of the theory of plate tectonics, including the concepts of continental drift and seafloor spreading. What was Alfred Wegener’s role?