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A heavy line with ticks or arrows showing which side moved.
Also known as: Thrust fault symbol, Fault trace
A fault is drawn as a heavy line on a geological map, with added marks showing which side moved and in what sense — ticks on the downthrown side for a normal fault, teeth on the overriding block for a thrust. A plain heavy line means the sense of movement is unknown.
Marks a fracture along which rock has moved, drawn as a heavy line with added marks giving the sense of movement.
Contexts: Technical drawing, Maps
Distinguishes fault types by the added marks: ticks on the downthrown side, teeth on the overriding block of a thrust, and arrows for lateral movement.
Contexts: Technical drawing, Maps
Is drawn plain where the sense of movement is unknown, so the absence of marks is a statement rather than an omission.
Contexts: Technical drawing, Maps
A heavy line across a map with short ticks, small triangles or half-arrows attached along one side.