19.10. Faults and Focal Mechanisms

Try these first

1. 1.

   What type of fault occurs due to extension?

   Hint

   Think about how the Earth's crust behaves under certain forces.

2. 2.

   Give an example of a strike-slip fault.

   Hint

   Look for a famous fault in California.

3. 3.

   Which type of fault is created by compressional forces?

   • Normal Fault
   • Reverse Fault
   • Strike-slip Fault

   Hint

   Think about which way the rocks are being pushed.

4. 4.

   True or False: A strike-slip fault involves vertical movement.

   • True
   • False

   Hint

   Consider the direction of rock movement.

5. 5.

   Analyze how the different types of faults could impact the structural integrity of a building located near them.

   Hint

   Think about how each fault type moves and what it implies for buildings.

6. 6.

   If a focal mechanism diagram shows a pattern of tension at a specific fault, what implications can be drawn for earthquake preparedness in nearby communities?

   Hint

   Consider where forces pull apart and how that can increase risks.