MINNESOTA. 



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Minnesota. 



List of the Geological Formations found in Minnesota: 



*Sub-divided into 3 Shakopee 1. s., 2 Jordan s. s., and 1 St. Lawrence 1. s. 



*Prepared expressly for this work, by Prof. N. H. Winchell, of Minneapolis, the State Geologist 

 of Minnesota. 



1 The three sub-divisions of the Lower Magnesian : 1, St. Lawrence 1. ; 2, Jordan s. s. ; and 3, 

 Shakopee 1. s. are here seen. 



2 In the immediate river bluffs, are the Jordan and Shakopee. Further back are the St. Peter's 

 and Trenton. 



3 Overlying 3 a. Calciferous, i. e., its two upper members- the 2 Jordan sandstone and the 3 

 Shakopee limestone, seen in the bluffs. 



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