MONOGRAPH XXXVl PL.V 





Sketch sliowiug locaLion of sections 

 General Map. 



Alk -^gr 





AIn Ala 



/Rgr 



AlaAlnAuAtnAla 



-■; "/-.^\ '^' 





In Ala ... —I ^^ 4''^ . 



AIn Als Ala 



STERN PART OF CRYSTAL FALLS DISTRICT 



VERTICM. SCALE, 1 INCH = 1320 FEET. 

 ES 1000 FEET, 

 v/he re exposures have been observed, 



.GONKIAN 



IAN 



UPPER HURON IAN 





s^^CI^^ 



aid Hemlock formation Grovel and &Negaunee Undivided 



te Ibrmation 



