U. S. GEOLOGICAL SURVEY. 



MONOORAPH XIX PL. XI 



EASTERN SANOSTONE 



KEWEENAW SERIES 



PENOKEt SERIES. 



■^ 



SOUTH 



h\H COM 



Iron-beanng M«fnb«r. Quani -State Memb«r Cheny Limestone Member ' Ferruginous Slates Greenstone Conglomerates Eruptivas 



ExDosuros of sandsion* ond coi>giom«r»t« W«00( txpo»ur»» of •rup»iy«» ^ WW E»po»ui»« oH»rruam«u» .ch.«i SLUpotum of sla<r p<<aM* ^ ERposumof limioat mxt chmn ^ O ftjK Upomunt <rf Itm^noM tif ^ «M« E«po«ur«« o* gr»»n«tot.« eongioni«r«t» VKOU E<paMr*t of |rMnaion«. 



South limit BBS 5»nd»ior>« Limiu o« »urf»c« diilnbution g Cipotuns o<i)uartimc phasn South limrt Umrts of surfK* distnkution Limn» of •urtae* dmrrkution Umit* of •orf»e» dnlrrMion 



-5ou1h limit 



South limit 



lEnposures shoxrind stnk* and dip >• Exposures showing no structure i Lines of exploration b/ US Gool Survey 



Scale of Map I inch -I mile Scale of Section I Inch - 1320 feet 



DETAILED GEOLOGY OF THE PENOKEE ^STRICT. SHEETS. 



PLEX. 



I WOtt Hb SJ poturot of hornbl*nd« schist. 

 B wO< C 3 ^ posiiras of chlonto schist 

 i J^W MS ^ )osures of mica schist 

 IWC inli turn orf gnoiss 

 4^ Gn i .osuros of granitoid gneiss 

 WV- Cr tfl osur«a of oranite 

 )MC4( Cr EJlosuras of groonstonos 



