Plate Tectonics
Wegener's Theory
Convection cells in the mantle
Plate Tectonics
Plate Tectonics
Pangea reunion
Earth 250 million years ago
Earth 100 million years ago
Earth without oceans
Wegener's Theory
Convection cells in the mantle
Plate Tectonics
Plate Tectonics
Pangea reunion
Earth 250 million years ago
Earth 100 million years ago
Earth without oceans