Two types of faults are responsible for earthquakes. Surface
faults are those that break the ground surface, revealing
how the rocks' original position was offset. Blind thrusts
are faults that do not reach the surface: rocks move
relative to one another on a fault surface beneath the
surface, but they only bend overlying rocks and no offset
is seen at the surface.
There are three types of surface faultsnormal,
reverse, and strike-slip. Reverse faults that have a
shallow dipping fault plane (slanted only slightly instead
of at a steep angle) are called thrust faults. Blind
thrust faults are a type of reverse faults.
! Click the dots next to the labeled faults to see images and animations of the different types of faults.