This guide includes a route and stops that present features of the San Andreas fault in the vicinity of Los Angeles and Wrightwood, California. Students can see different rock types on either side of the fault, representing the Pacific and North American Plates, and other features such as sag ponds, fault gouge, fault valleys, and tilted layers of sediments. Full description.

This article describes the occurrence of listric normal faults (those which gradually flatten out with depth) in the continental shelf offshore Oregon and Washington, as seen in seismic reflection profiles. There is also a discussion of the faulting mechanics, the timing of uplift on the continental shelf, and the separation of compressional and extensional tectonic regimes on the lower and upper ... Full description.

This report describes a structural model proposed to explain sedimentation patterns in the Trinidad area of the East Venezuelan Basin. Full description.

This virtual field trip shows students the geologic features of Enchanted Rock, a dome of Precambrian granite located in central Texas. They can see small faults, fault gouge, close-up photos showing the texture of the granite, and a variety of features produced by weathering. Full description.

This guide provides an introduction to the structures, rocks, and geology of the Punchbowl Fault, a part of the San Andreas Fault system in southern California. Topics include the timing of the fault's movement, the amount of displacement, and the internal structure and fabric of the fault. There is also information on the geochemistry and fabric of the crushed and distorted rocks (ultracataclasites) ... Full description.

This site shows how to make paper models representing simple faults and illustrating some of the landforms associated with faulting of the Earth's crust. Full description.

This classroom activity uses a cake to demonstrate geologic processes and introduce geologic terms. Students will learn how folds and faults occur, recognize the difference in behavior between brittle and ductile rocks, and attempt to predict structures likely to result from application of various forces to layered rocks. They will also attempt to interpret 'core samples' to determine subsurface rock ... Full description.

This page provides an introduction to strike-slip and oblique-slip faults, including brief written descriptions and animated diagrams showing the relative sense of motion on these faults. Full description.

This activity consists of four exercises that deal with the partitioning of slip within scenarios involving two or more faults. The first three are hypothetical situations; the last activity focuses on the plate boundary in southern California. Full description.

A small collection of fault gouge images from the Badwater Turtleback fault in Death Valley, California, is presented on this page. Each image is presented on a separate page with a caption. Full description.