HY L. A. COTTON AND A. B. WALKOM. 



707 



\ w <:^ 



PERMO - CARBONIFETROUS 



Rhvolite tuff 

 GDNNEnAH 



Aplitic eranit :. 



yCARBONIFEROUS 



Interbedded tuff and chert. 



Porphyrite. 

 Tuffaceous claystone 



Probable Fault Carroll 8ap 



xvx^ 



Large boulders of tuff. 



Dark limestone. 

 Chert with little tufT. 

 TufTs and chert 



Dark limestone. 



y DEVONIAN 



Probable Fault with throw to East 

 of perhaps goOO teet. 

 l.XMWORTH. 



