U. S. GEOLOGICAL SURVEY. 



MONOGRAPH XIX PL. VI 



n .j.vv. 



m? i?sfflx~ 



y 77 — 7^ — — 7^ 



Penokee Range 



looo feet above : S 



5 i.» i a< 



~/m- jm mm 



rooo feet above Sea 



KEWEENAW SERIES. 



Upper-Slate Member 



)»19. Exposures of eruptives ? tw M S Mica-stole exposures 



^ V(ft Bl SI Bleck state exposures 

 = Wn Q Quartzite e;^posures 

 SS ^ Owv G re/ wacke exposures 



PENOKr. .ERIES. 



-South limit. 



Iron-bearintf Member 



*t* Exposures of ferruginous schist 

 Limrts of surface distribution 



SOUTHERN COMPLEX. 



Quartz-S. ; Member Cherty Limestone Member Eruptives. 



SI.Exposurt if slaty phases ^^ 'SSK Exposuresof limestone and chert ^«w Exposures of greenstones ^ WK Exposures of hornblertde schist. 



Q tftposural , '^uartztttc phases — 

 South I in 



South limit 



V/f Exposures of oranrta 



*Exposures showing str.k. and dip W Exposgres show.r 



,o structure -Lines of exploration by U S Geol Survey 



Lines of exploration by Wis Geol S vey Scale of Map I inch-l mile 



Scale of Sectioni nch = 1320 feet 



DETAILED GEOLOGY OF THE i NOKEE DISTRICT, SHEET 2. 



