MEAN (phi) 

 a. Dune (□) 



MEAN (phi) 

 b. Beach (*) 



MEAN (phi) 

 c . Bar/trough (+) 



MEAN (phi) 

 d. Nearshore (•) 



Figure 20. Plots of mean grain size 



versus sorting of dune, beach, bar/ 



trough, and nearshore groups 



54 



