Plate 3. (A) Five general texture classes (USDA5), labeled at the base of tetrahedron, were created from 12 classes. The USDA5 and corresponding USDA12 classes are: cr = coarse = s + ls, mocr = moderately coarse = sl, mecr = medium coarse = l + sil + si, mofn = moderately fine = cl + scl + sicl, and fn = fine = sc + sic + c. (B) Coordinates of the USDA5 class trajectories (lines connecting centroids from 0 to 100% rock) in (A) were transformed to WSPSD statistics coordinates (curved lines). The broken lines connect texture class centroids at constant 10% rock intervals
