U. S. GEOLOGICAL SURVEY. 



s'^«>gs.^:!.':.':..../!?'s'si 



Bl SI. D Bl SI. 



Gr On 



Hii .!'■ 



400 feet above L Superior 



MgSch 6 Sch, Bl SI 



SOUTHERN COMPLEX 



■ Q.uartz-State Iron-Bearing Memfaei 

 Member 

 CherCy Limestone Member 



■ 



BI.SI 



Oenei-al 



i 

 81 SI. D Bl SI C 



KEWEENAWAN 



PENOKEE SERIES. 



Upper Slate Member. Iron-bearing Member. Quartz-Slate Member Cherty Limej 



'**" tf ■?h^^'"'> ^*^ M S MIca-slate ^G Sch Garnetiferous actinohle sch.st VQ Vitreous quartzite a! summit 



iouth limit. ^= Bl SI Black slate at summit ofttie member of the member 



~^-^ Q Quartzite = Mg Sch Magnetic and actinolitic quartz schist. SI Main body of the slate 



South limit. Limits of surface distribution B B Basal breccia 



South limit 



= W.Ch.Wt 

 ^ L Lime 

 South 



Diiections of colored lines show strike of layers 



Scale of Map and Sections I inch- 900 feet 



Contours 20 f€ 



MAP SHOWING THE DISTRIBUTION OP EXP 



