1. Fault plane

• The surface along which the fracture occurs in rock mass and the relative movement of blocks has been taken place is called as fault plane.
• It may be inclined, vertical or horizontal

2. Hanging wall

• The block which lies above the fault plane is called as hanging wall

3. Foot wall

• The block which lies below the fault plane is called as foot wall

4. Hade

• The inclination of fault plane with the vertical is called as hade. It is also called as slope of the fault.

5.Throw

• The vertical component of displacement of fractured block is called as throw

6. Heave:

• The horizontal component of displacement of fractured block is called as heave

7. Slip

• The displacement of fractured block along the fault plane is called as slip.

8. Strike

• The horizontal distance perpendicular to the fault plane is called as strike. For an inclined plane, it is the compass direction of any horizontal line on the plane