■<>~ 



^r- 



^J- 



Mean Flow Direction 



Two — Dimensional, Straight— Crested Dunes 



Mean Row Direction 



^>-'^ 



Three — Dimensional, Cuspote Dunes 



Figure 12. Two-dimensional and tJiree-dimensional bed forms. Vortices and flow patterns 

 are shown by arrows above the dunes (after Reineck and Singh (1986)) 



Chapter 4 Sedimentary Features/Stratigraphy of the Inner Shelf 



47 



