THE EARTH IN CHANGE, THE EARTH'S CRUST

Tells story of the changing land features of our planet. Describes and illustrates ways in which ice, wind and water act to wear away the surface of the earth, and how sedimentation, the action of volcanoes and earthquakes and other forces help to build it up. Scenes of Glacier National Park, Vesuvius and Paricutin volcanoes and other rich geologic sources throughout the world contribute to a real understanding of the processes that change the surface of the earth.