The nucleus appears to be either dextral or sinistral indifferently. Vergence, similarly to fold pairs, is sometimes classified as sinistral or dextral. Currently the Upper Rhine Graben is thought to be experiencing dextral strike-slip reactivation. It has asymmetric jaws, which facilitates feeding on snails with dextral (clockwise coiled) shells. In Armenia the collision is strongly oblique with a large dextral (right lateral) strike-slip component. The eastern segment, known as "East Valley Fault (EVF)" moves in an oblique dextral motion. The dextral shells are mostly of small and rarely medium size. In between the Osbourn Trough is divided into three segments separated by dextral offsets.