can anyone point me in the right direction for a reference on the
statistical analysis of natural fracture sets? I'm after a working
figure for the sperical standard deviation or semi cone of
confidence for the orientation of an 'extensional fracture set'.
note it is the spherical statistical form not the circular
most authors offer ranges of strike typically 20-30 degrees.
thanks
John Rogers
Department of Geology
University College, Cork
Cork
Ireland
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