File:Locharbriggs sandstone grain sizes.png

Summary
Graph of incremental total volume (%) vs grain diameter (mm) is from the laser particle size analysis on a log linear scale. The plot compares the grain-size distributions of gouge strands sampled from tests carried out at increasing amounts of axial strain (4.2, 6.5 and 11.2%). The grain-size distribution for undeformed Locharbriggs sandstone is plotted for comparison. The three gouge samples have very similar characteristic curves which exhibit both the same peak value, indicating significant grain-size reduction with respect to the undeformed sample, and a similar range of grain sizes.