30 



. 











MEAN 



GRAIN SIZE 



25 







A /\ 



►^ 20 

 U 



a. 



- 





/\ / 



in 



Z 



° 15 



S 



i- 







/ 



10 



- 





I 



5 



a 



* 



____/ 







■• 



l 







PHI UNITS 



Figure 16. Percentage frequency of mean grain size (phi) at all stations, 



40 



