LC database, Mar. 9, 205 (title: geological faults)

Forsmark site investigation : searching for evidence of late- or postglacial faulting in the Forsmark region, 2005: abstr. ("Major faulting" is defined as dislocations in the order of several metres along faults several kilometres long)

Wikipedia, Aug. 26, 2009 (Fault (geology); "In geology, a fault or fault line is a planar fracture in rock in which the rock on one side of the fracture has moved with respect to the rock on the other side. All faults have a measurable thickness, made up of deformed rock that is characteristic of the level in the crust where the faulting happened, the rock types affected by the fault and the presence and nature of any mineralising fluids.")