When the Earth Moves, Segment One

Segment One: Folds, Faults and Mountains

This video segment introduces students to the major types of deformational forces and the landforms that result when they are present. The video explores open folds of the Ridge and Valley Province in Virginia, as well various types of folds in the Canadian Rockies. Students learn about the relationship between landforms and their underlying geologic structure by looking at the ridges produced by erosion of the Sinking Creek Anticline in Virginia. The video also illustrates fractures, normal faults, reverse faults and strike-slip faults using field examples in Virginia, Wyoming and California. This video segment concludes with examples of faults that formed large features such as the Grand Tetons and Sierra Nevada mountains.

Back to main What On Earth video series page