reverse fault
Thrust
The focus (more correctly termed the hypocenter) of an earthquake is the point in the earth where the earthquake rupture or fault movement actually occurred. The point on the surface directly above the hypocenter is known as the epicenter.
A crack in the earth's crust would more correctly be termed a discontinuity (this may also be known as a fracture or fissure). A discontinuity on which relative movement has occurred is known as a fault.
Normal Fault
This is true of normal faults. In thrust or reverse faults, the hanging wall moves up relative to the footwall and in strike slip faults, it moves horizontally relative to the footwall.
Reverse Fault
This is described as a normal fault.
This is described as a normal fault.
This is described as a normal fault.
This is described as a normal fault.
If a fault or intrusion cuts through an unconformity, the fault or intrusion is younger than all the rocks it cuts through above and below the unconformity.
If a fault or intrusion cuts through an unconformity, the fault or intrusion is younger than all the rocks it cuts through above and below the unconformity.
This is described as a normal fault.
The focus (more correctly termed the hypocenter) of an earthquake is the point in the earth where the earthquake rupture or fault movement actually occurred. The point on the surface directly above the hypocenter is known as the epicenter.
a reverse fault
A reverse fault is formed here
The footwall is the block that is below the fault. The hanging wall is the fault block that is above the fault.
In a normal fault, the fault is at an angle, so one block of rock lies above the fault while the other lies below it. The rock above it is the hanging wall and the rock below it is the footwall. In a normal fault, the hanging wall moves downwards relative to the footwall.