This could be needed in the Worldbuilding stack exchange instead of here, but when I was mapping out the movements of the tectonic plates, then there's a few locations where oceanic and continental plates are moving parallel to one another in opposite directions, creating transform boundaries.
I can't find anything regarding the formations that would arise from this, though I expect that something along the lines of cliffs might form, though this is pure speculation. What formations should I expect?
And as a side-note, I also found many cases of when one plate is moving parallel to the boundary, but the other plate is moving either convergent or divergent of that boundary. What formations should I expect from these as well?