MEAN (phi) 

 a. Station 7 (x) 



MEAN (phi) 

 b. Station 8 (*) 



MEAN (phi) 

 c. Station 9 (v) 



MEAN (phi) 

 d. Station 10 (*) 



Figure 17. Plots of mean grain size 

 versus sorting for all samples in 

 the bar/trough group 



49 



*-*L. 



