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GEOLOGICAL- AND NATURAL HISTORY 

 SURVEY OF MINNESOTA. 



POLK AND NORMAN 

 COUNTIES 



BY J.E.TODD. 



Heoent 



Cilacial 



Explanation 



Alluvium and lacuslrifte 

 Delta, ttnd other modified drift 

 7 i U, flat or undulating 

 Mntfiinic 

 \ \] Koines 



Kadroads 



Fifty fool contours 



ed fool contours 



Contour Lines /? xhown approximately for every' 30 feet above (he # 



\ Note:. Below the highest beach, Una the-tillts 

 more orlc.is covered by lacit**lrine deposits^ 



