Compaction Localization in Porous Sandstone: Implications ...
out on Castlegate sandstone having a porosity of 28%. This rock is composed of 70-80% quartz grains of about 0.2mm diameter, 5-10% clay, and a few rock fragments. For confining pressures below 69 MPa, well-developed shear bands, or faults, were formed just following the peak in the stress-strain curve. At confining pressures greater than 150