Porowatość matrycy wapieni i margli jury górnej w rejonie Olkusza

The article presents results of laboratory open porosity analysis on 167 Jurassic limestones and marls samples. Samples was taken from five boreholes drilled on the East of the Olkusz Zn-Pb mining region. Statistical methods was used to elaborate of the research results. The mean, standard deviation and maximum and minimum value was calculated. The variability of open porosity with depth was shown on the example of one borehole. Relationship of the parameter in the rock samples taken horizontal and vertical to the bedding was analyzed.