THE ORDOVICIAN PERIOD. 



Pleistocene fe-r^: l'~ ~.'-']Lj2 Soil 



150' Coal-measures shale 



317 



Carboniferous 



or 

 Pennsylvanian 





Mississippian 



Lower Silurian 

 (Ordovician) 



KT 



Probable 

 Cambrian 



TTTT 



150' Graydon sandstone 



60' Saline Creek Cave conglomerate 



35' Burlington limestone 

 50' Pacific sandstone 



ZOO' Jefferson City formation 



1(50* St. Elizabeth formation 



111- I 



1-1,1 



3=rr 



r- l - l 



l^TT 



T~7T 



^^P^ 



2,50' Gasconade limestone 



J8 Gunter sandstone 

 57' Proctor limestone 



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