PHYSICAL PROPERTIES OF ROCKS IN A SHEAR DISLOCATION ZONE
Two one-dimensional (L, L 1) and two two-dimensional (S, S 1) parameters for fledging and sutural faults have been used to study the influence of shear dislocation on layered zoning of physical properties. The influence of the dislocation commences to become apparent at the distance of 1.5 to 2 km from the fault. Closer to the faults, spread in the values of physical properties (i. e., difference between the upper and lower envelopes) grows 1.2 to 2 fold. Other things being equal, growing and lowering values of filtration properties are mostly connected with stretching and compression zones, respectively. Against the background of sandwiching compression and stretching zones, average values of the filtration properties grow while approaching the faults. This is due to a greater degree of rock disintegration and, as a result, higher porosity, permeability and fracturing.