7ti. 



\\.\\ w. 



n.x\\: 



GEOLOGICAL .VXD NATrUAL IHSTOHY 

 SI'ltVKV Ol-' MI. \\KSOTA. 



GABBKO LAKE PLATE 



COMPILED BY U.S. GRANT. 



h/ni { | 



Contour Lines , 



t'!t/ur ' - '// i .iii 



Troth 



/////////((/ /oof conlours 



shown ttfy<n>i:tt>if<'i\-t<,n'V<>r\- .'><>/<<> .i>">\-i' 



lli /is't-M't////' Quints -ti'.',:i" fit, mnl mt< 

 . \n .In . u t r. i, ////,( /Ait<f4-t\' iirri-j/xforti'.* <in<f fr 



rti< Iv ' 



' 1HI {>ftlflll< !!/!<} Weft/fa' 

 'Y"ll','(/ ll\'X<'ll< !/</>!!..* \\fri' <'>/<ttft('</ l>\~ ll-ll /'/,// 



