Distributed Extension

Photo "Map view" of top surface of scaled clay model of distributed extension. The clay was deformed above a uniformly stretched latex sheet. Bright features are fault scarps dipping toward the top of the image; dark features are fault scarps dipping away from the top of the image. The pattern of faults is not unlike that in the Basin and Range. The experimental model was run at Mobil Technology Company by Rolf Ackermann, Martha Withjack, and Roy W. Schlische.
Vertical slice through clay model shown above. The slice was prepared after the clay had dried and hardened. Faults cutting the uppermost white clay layer are shown in the map view above. The latex sheet was located at the base of the lower brown layer.