Types of Earthquakes &
There are four different
types of earthquakes: Tectonic, volcanic, collapse and explosion.
- A tectonic earthquake is one that
occurs when the earth's crust breaks due to geological forces on rocks and
adjoining plates that cause physical and chemical changes.
- A volcanic earthquake is any
earthquake that results from tectonic forces which occur in conjunction with
- A collapse earthquake are small
earthquakes in underground caverns and mines that are caused by seismic waves
produced from the explosion of rock on the surface.
- An explosion earthquake is an
earthquake that is the result of the detonation of a nuclear and/or chemical
There are three different
types of faults: Normal, Reverse, and Transcurrent (Strike-Slip).
faults form when the hanging wall drops down. The forces that create normal
faults are pulling the sides apart, or extensional.
- Reverse faults form when the hanging
wall moves up. The forces creating reverse faults are compressional, pushing
the sides together.
- Transcurrent or Strike-slip
faults have walls that move sideways, not up or down.