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Strike slip faults in sand-box experiments
The movie on the right shows a view from above of a physical experiment involving the shearing of a rigid plate underneath a thick layer of sand.  The movie shows the development of en echelon fractures oriented NW-SE.  This zone of weakness progressively evolve into an EW strike slip fault. 

More at-> http://www.gl.rhbnc.ac.uk/FDP/Modellingframe.html
 


The picture on the top right shows a map view of a shearing experiment.  The offset along the grid indicates that the shearing was dextral.  The bottom left picture shows a cross section view along the direction x-x'.  This section shows the base plate with a vertical discontinuity that localises the shearing.   In the pile of sand above a few strike-slip faults develop. These fault have a reverse component that is responsible for the thickening of the sand layer.  The picture on the far right represents a digitized view of the topography at the surface of the sand box.