Friction versus dilation revisited: Insights from theoretical and numerical models Academic Article uri icon


  • Abstract [1] The stability and dynamics of geological faults are often controlled by the frictional strength of the fault gouge, a granular layer that accumulates between the fault blocks due to wear. One of the main factors controlling the shear strength (as measured by an apparent friction coefficient) of such granular layers is the systems resistance to dilation, a by-process accompanying granular shear. This paper develops theoretical models connecting shear resistance and dilation during the different types of motions that occur in …

publication date

  • September 1, 2011