Author Question: Describe four common types of faults and the key characteristics or motion of each. What will be an ... (Read 77 times)

sammy · **on:** Jul 13, 2018

Describe four common types of faults and the key characteristics or motion of each.
What will be an ideal response?

Question 2

Describe the key elements of what happens to rock before, during and after an earthquake in the elastic rebound theory.
What will be an ideal response?

AaaA · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

ANSWER: Normal faults involve motion at a divergent boundary where rock above the fault slips down and over the rocks beneath the fault.
Reverse faults involve motion of rock on the upper side of a fault up and over rock beneath the fault.
Strike-slip faults involve motion at a transform boundary and involve horizontal motion parallel to the fault.
Thrust faults are similar to reverse faults, but the fault surface is more gently inclined. Blind thrust faults involve motion that does not reach the surface.

Answer to Question 2

ANSWER: Stress exists along a fault as a result of plate motion.
Strain causes rock to deform in the direction of plate motion.
Rupture is caused by brittle failure of the rock.
Rebound brings rock to an undeformed state.