Folds                                Faults



-Stage 2.2-




There are 3 main types of faults:


Normal Faults


Reverse Faults


Strike-Slip Faults


Normal Faults


Normal Fault

Main parts of a fault first:

Normal Fault - When the hanging wall moves down and the foot wall moves up


Extension - The large arrows on the side show the movement of the blocks. This is when the blocks move away from each other





Reverse Faults


Reverse Fault


Reverse Fault - Pretty much the opposite of a normal fault


The hanging wall moves up while the foot wall moves down


Compression - The blocks are pushed together


Thrust Fault - A reverse fault that is extremely shallow (less than 30°)







Strike-Slip Faults


There are 2 types of strike-slip faults depending on the direction of movement


Strike-Slip Fault - This is when two blocks slide past one another

The San Andreas Fault is a strike-slip fault


Right Lateral

Right Lateral Strike Slip Fault






Right Lateral - Say you were standing on the X, a right lateral is when the opposite block moves rightwards compared to where you were standing









Left Lateral

Left Lateral Strike Slip Fault





Left Lateral - It is the opposite of a right lateral strike slip fault. When you are standing on the X, the opposite block moves to the left