Skip to main content
U.S. flag

An official website of the United States government

Desert Ribbons

Detailed Description

Rock folding on a tectonic scale occurred in northwestern Africa. These motley ribbons dancing across the desert in Morocco are folds caused by the prolonged collision of tectonic plates. The long continuous line is Jbel Ouarkziz, a ridge that rises 200–300 meters above the valley floors.


Public Domain.