by: Samuel Gonzales
Three Layers And Why Their Important
Continental Drift And Who Created The Hypothesis.
evidence for continental drift
Wegener noticed that the continents seemed to fit together, not at the continuously changing shoreline, but at the edge to their continental shelves. He derived this hypothesis from the observation that the continents in the southern hemisphere exhibit an identical pattern of rock and fossils known as the "Gondwana sequence". The most logical explanation was that the continents themselves were once parts of a much larger "super-continent" which was named Pangaea.
A second idea supporting movement of the continents was the glacial till deposits in the southern hemisphere. With the continents in their present positions, the till deposits indicate erratic glacier motion. When the continents are fitted together, they show a much more streamlined motion of the glacier from southern Africa and Northern Australia outward.