Part 2

Exploration Phase

1. Have students develop a model of a thrust fault. Instructions to students:

   1. Locate points C and D on your model. Move Point C next to point D. Observe the cross-section of your model.
   2. Have students draw the thrust fault as represented by the model they have just constructed.

Concept Development

1. Ask the following questions:

   1. Which way did point D move relative to point C?
   2. What happened to rock layers X, Y and Z?
   3. Are the rock layers still continuous?
   4. What likely happened to the river? the road? the railroad tracks?
   5. Is this type of fault caused by tension, compression or shearing?

2. Explain that this type of fault is known as a thrust fault.

3. Have students label their drawing "thrust fault".

4. An example of a thrust fault is the fault in which the Northridge earthquake occurred. The thrusting movement raised the mountatins in the area by as much as 70 cm.