U.S. GEOLOGICAL SURVEY 



Aim Alrti 

 AlsWr;A|^ : Air Als 



/Rgr 



^^/^i'/-^^]^l^M'?^'^I^A^'^^ri^ 



Als /Rgr Als Air 



ARCH E AN 



GENERALIZED SECTIONS THROUGH SOW 



HORIZONTAL SCALE, 1 INCH = 1 MILE. 



ELEVATION OF BAS 

 NOTE-. Formations are brought to the surface 



ALGQI 



LOWER HURONIAN 





M&f&^fei 



Gremite Sturgeon and Ajibik Kono andRaiidviUe Manslield and Hemlock formation 



"quarlzite dolomite Siamo slate 



