See Inside Our Ever Changing Earth

Earth before Pangaea [Preview]

The North American continent may be more nomadic than most of its inhabitants

IAN W. D. DALZIEL has been studying the geology of Antarctica, the Andes, the Caledonides and the Canadian Shield since earning his Ph.D. at the University of Edinburgh in 1963. Currently he is research professor and associate director at the Institute for Geophysics of the Jackson School of Geosciences at the University of Texas at Austin. In 1992 Dalziel received the Geological Society of Londons Murchison Medal. In addition to his extensive geologic travels, he loves to visit wild places, preferably with his family. When in Austin, he sculls on Town Lake.

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