50 



40 



30 



o 



z 



UJ 



p 20 



10 



1.0 



J L 



4.0 



5.0 



PHI 



I COARSE SAND | MEDIUM SAND | FINE SAND [ VERY FINE SAND | SILT | 



MEAN 2.720<l> 

 STANDARD OEV. .250<t> 



Figure 14. Histogram of the phi mean diameter of 95 samples from cores 

 in the fine gray sand (Unit A) . 



29 



