Lyons (E) 



Lyons (C) 



40- 

 30- 

 20 

 \0-\ 



Fountain ( A) 



.833 .417 .246 .175 .147 .124 -.124 

 Grode Size in mm. 



Fox Hills (F) 



.589 .495 .295 .246 .147 .124 .104 .088 .074 -.074 



Figure 78. Typical histograms of various sandstones of Rocky Mountain 

 region. Refer to figure 79 for corresponding cumuJative-frequency- 

 curve data. 



