11. One hypothesis is that a north trending dextral transform faults has displaced this section of the arc to the north. 12. Many of these arboreal snails are dextral . ( See the section on chirality in the article gastropod shell .) 13. This image " flipping " results in a normal dextral gastropod appearing to be a rare or abnormal sinistral one. 14. It is bounded by dextral wrench faults ( possible transform faults ) and probably represents a pull-apart basin. 15. This is supported by the operculum of " Maclurites ", which corresponds to that of dextral gastropods. 16. The GLTZ was an active dextral strike-slip zone south of Marquette, passing under the large Marquette anticline. 17. The spatial arrangement of the lodes and gashes hints at a transtensional, dextral shear zone oriented NW-SE. 18. The main tectonic pressure was from the south or south-east, and there developed dextral strike-slip faulting. 19. The shell is carried upside down with the aperture on the right, and this makes it appear to be dextral . 20. This means that some specimens have sinistral ( left-coiled ), others dextral ( right-coiled ) shells.
