Crustal Deformation


Terms to learn:

compressional stress      tensional stress                shear stress         elastic deformation

plastic deformation        brittle deformation        anticline                  syncline

joint                                          reverse fault                      normal fault          strike-slip fault


Topic outline:

A. Tectonic forces

  1. Stress

B.     Behavior of rocks under stress

C.    Types of geologic structures

  1. Folds
    1. Anticline
    2. Syncline
  2. Fractures
    1. Joints
    2. Normal fault (dip-slip)
      1. footwall
      2. hanging wall
    3. Reverse fault (dip-slip)
      1. thrust
    4. Strike-slip fault
      1. left and right lateral


Interesting places to visit:

Great basics on structural geology:


Self quiz:


When you are finished with this topic, you should be able to answer the following questions:

  1. What types of stress are associated with each of the three faults?
  2. Folds are formed by what type of deformation and stress?
  3. What is the difference between a joint and a fault?
  4. How do you distinguish between a right-lateral and left-lateral strike-slip fault?
  5. What type of fault would you expect to be predominant at each type of plate boundary?