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Types of Faults

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Three major Faults Strike-slip Reverse Normal 1. Normal Fault This fault is caused by tension stress. Normal Fault Normal Fault Normal Fault 2. – PowerPoint PPT presentation

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Title: Types of Faults


1
Types of Faults
2
What is a fault?
  • A fault is a break in the Earths crust/plate.
  • Faults occur because of the movement along plate
    boundaries.
  • Stress from the plate movement causes the crust
    to break.
  • The direction of plate boundary movement
    determines the fault type.

3
GEOLOGICAL CONCEPTSTYPES OF FAULTFootwall/Hangin
g wall from Mining geology
Miners put their lamps on the hanging wall and
walk on the foot wall.
4
Three major Faults
Normal
Reverse
Strike-slip
5
1. Normal Fault
Plate above fault line drops.
This fault is caused by tension stress.
6
Normal Fault
7
Normal Fault
8
Normal Fault
9
2. Reverse Fault
Plate above fault line rises up.
This fault is caused by compression stress.
10
Reverse Fault
11
Reverse Fault
12
Reverse Fault
13
3. Strike-Slip Fault
Plates move past each other.
This fault is caused by shearing stress.
14
Strike-Slip Fault
15
Strike-Slip Fault
16
Strike-Slip Fault
17
Types of Fault Stress
  • Tension to stretch
  • Compression to squeeze together
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