-9- 



Q_ 



Z) 



o 

 cr 



(3 



LU 



o 



o 



< 



cr 

 o 



Li_ 

 UJ 



o 



h- 

 co 



Q 



< 

 CO 



cr 



UJ 



l- 



LU 

 Q_ 



H 

 CO 



STARVED 



ROCK 

 MEMBER 



(90 ft) 



ty pe sect/on 

 r0 



HO 



"Glen wood 

 Kingdom tongue' 



TONTI 

 MEMBER 



ty pe section 



m 



7 



Vm 





Sandstone - light brown to 

 white, consists of medium- 

 size well rounded quartz 

 grains, well sorted, thick- 

 bedded. 



Sandstone - white, silty, 

 consists of fine well round- 

 ed quartz grains, friable. 



Sandstone - gray, consists 

 of medium-size quartz grains, 

 well sorted, massive. 



Sandstone - light brown to 

 white, bimodal in texture, 

 consisting of both fine and 

 coarse well rounded quartz 

 grains (Glenwood texture) , 

 argillaceous, thin-bedded. 



Sandstone - light brown to 

 white, consists of well 

 rounded very fine to medium 

 quartz grains, friable, 

 silty streaks. 



Sandstone - light brown to 

 white, consists of medium 

 well rounded quartz grains, 

 friable, well sorted. 



Sandstone - light brown to 

 white, consists of fine well 

 rounded quartz grains, fri- 

 able, well sorted, thick- 

 bedded, commonly cross-bedded, 

 Base concealed below water. 



£0* 



&mi 



Fig. 5 - Stratigraphic section at Starved Rock. Some of the Tonti Sand- 

 stone is under water at the base. This section, along with 

 those at Lover's Leap and French Canyon to the east, represents 

 the type sections of both the Starved Rock and Tonti Members 

 (Templeton and Willman, 1963). NW% NW% Sec. 22, T. 33 N., 

 R. 2 E., La Salle County, Ottawa Quadrangle. 



