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![]() The similarities between the Appalachian and the eastern Greenland mountain ranges are evidences for the continental drift hypothesis. Wegener concluded that they formed as a single mountain range that was separated as the continents drifted.įigure 2. The Appalachians of the eastern United States and Canada, for example, are just like mountain ranges in eastern Greenland, Ireland, Great Britain, and Norway (figure 2). Mountain ranges with the same rock types, structures, and ages are now on opposite sides of the Atlantic Ocean.Wegener said the rocks had formed side-by-side and that the land had since moved apart. ![]() Identical rocks, of the same type and age, are found on both sides of the Atlantic Ocean.\)īesides the way the continents fit together, Wegener and his supporters collected a great deal of evidence for the continental drift hypothesis.
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