The place where a fault ruptures is called the focus or origin, and the point directly above on the earth’s surface is called the epicentre. The pulse of energy released by a fault movement radiates outwards as seismic waves, or shock waves. Large, shallow earthquakes sometimes cause a surface rupture, as shown here.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.
Source: Rebecca Ansell and John Taber, Caught in the crunch. Auckland: Harper Collins, 1996, p. 45