PLATS: z3AKi> 2-t. 



L INC O L N COUNT Y , 



i \-s . _ 



l^L.^Pj L L I D E 



- |-Ng>^r%-' 



-4- J 



fttfi^.fl' T vT 

 S P R I N Q- 





j R.XLVIW. Q n.xi.vw. \\- 



GEOLOGICAL AND XATURAL HISTOKi' 

 SURVEY OF MINNESOTA . 



PIPES TONE ANC 



ROCK 

 COUNTIES. 



BY N. H. Wl NCHELL . 



PLATE 24 



VICINITY OF THE RED PIPESTONE QUARflY 



1 Loess ; Modified Drift 



1 

 Quaternary )?M, smooth and imAtitttmc/ \ ) 



- - 



J Cam 



brian (Potsdam Qnccrt^ 



Conl our Lines are cfrntm 

 approxrmatel) -fir each 5O/ect 



cm 



r~ 



rtbove. the sea. . 



