Objectives for the topic: Geologic Structures

Reading: Chapter 15 in Tarbuck and Lutgens

Images to understand: 15.2, 4, 6, 10, 11, 18, Box 15.2

After completing this topic, the student will be able to:

1. Distinguish stress from strain (in the geologic sense).
2. List the three variables that determine whether rocks fault (brittle) or fold (ductile) under stress.
3. Make a chart that classifies the following geologic structures according to material strength (hi vs. low), stress field (extension vs. compression vs. shear), and strain rate (hi vs. low):
   • folds
   • normal faults
   • reverse and thrust faults
   • strike-slip faults.
4. Identify the following:
   • anticline
   • syncline
   • monocline
   • dome
   • basin
   • horst
   • graben