"But we do see some grass-roots, common-sense indicators of success, " he said.
2.
The most common shear sense indicators are C / S fabrics, asymmetric porphyroclasts, vein and dike arrays, mantled porphyroclasts and mineral fibers.
3.
"En echelon " tension gash arrays ( or extensional veins ), characteristic of ductile-brittle shear zones, and sheath folds can also be valuable macroscopic shear-sense indicators.