Plate tectonics is the theory used to explain the structure of the Earth’s crust and many of the associated phenomena. The rigid lithosphere is split into 7 major ‘plates’ that slowly move on top of ...

Ever since the continents were all mapped, people had noticed that many coastlines, like those of South America and Africa, looked as though they would fit together if they could be moved like puzzle ...

V. 1. Wegener and the early debate -- v. 2. Paleomagnetism and confirmation of drift -- v. 3. Introduction of seafloor spreading -- v. 4. Evolution into plate tectonics "Resolution of the sixty year ...

THE late Dr. A. Wegener claimed the advantage for his hypothesis of continental drift that it could be tested by making repeated astronomical observations of the positions of land stations; for drifts ...

WEGENER'S hypothesis is based on the idea VV that the continental masses are patches of lighter rock floating and moving in a layer of denser rock, and this denser rock forms the floor of the oceans.

Continental Drift “In 1912 Alfred Wegener proposed that the continents had originated in the breakup of one supercontinent. His idea has not been widely accepted, but new evidence suggests that the ...

Historians of the early debate on the Wegenerian continental drift hypothesis all point to the 1926 symposium of the American Association of Petroleum Geologists as instrumental in turning American ...

I’ve seen pictures of Pangaea, the giant land mass that eventually separated into the continents we know today. But why were the continents smushed together like that in the first place? What made the ...