10- 



h ^8 '/J6 h2 '/64 '/I28 Vi 



DIAMETER IN MM. 



256 



50 



-40 



20 



«,,„., i „ I v- crs. I crs. I medlfine I v. fine I crs. I me d. I fine Iv.fine i . i- u 

 g ranule ss. ss. ss. ss. ss. silt sill silt silt c V 



Figure 6-1. Histogram prepared from data in Table 6-2. 



100 



90 



80 



70 



60 



50 



40 



30 



20 



10 



.05 



.01 



005 



001 



pebble Igran 



DIAMETER IN MM. 



v. c rs crs. 

 ss. ss. 



mea 

 ss. 



f i nelv.fi ne 

 ss. ss. 



crs. 

 silt 



med. 

 silt 



f i ne v.f i ne 

 silt silt 



ay 



410 

 .130 



177 



Sk = 



.410 



(265) 



.76 



Figure 6-2. Cumulative-frequency curve prepared from data in Table 6-2. 



99 



