99.9 



99 

 98 



95 

 90 



80 

 70 

 60 

 50 

 40 

 30 



20 

 I 6 



2 



I 



0.5 



0.1 















l/_ 



















// 



/ 



















// 





























































' / 























Jl 



















Jl 





ch 



16 = 0.60 

 84 = 2.40 

 = 1.50 

 = 0.90 













/ 

















// 





r 



M 















c 











/ 

























































-/\ 











Observed 

















( 1 









' 



' / 





















/ 







































-I 01 234567 



Grain size <p 



Figure 3. Cumulative size plot (data from Table 2) 



14 



