Figure 1. Size-frequency plots comparing millimeter and phi- size scales, 



Table 2. Size-frequency data for 



Figure 1. 



Millimeter range 



Weight 



Phi range 



Cumulative 





(pet) 





(pet coarser) 



1/32 to 1/16 







5 to 4 



100 



1/16 to 1/8 



6 



4 to 3 



94 



1/8 to 1/4 



22 



3 to 2 



72 



1/4 to 1/2 



42 



2 to 1 



50 



1/2 to 1 



26 



1 to 



4 



1 to 2 



3 



to -1 



1 



2 to 4 



1 



-1 to -2 







