THE TEMPORARY MISSISSIPPI RIVERA 



WALTER H. SCHOEWE 

 University of Kansas 



CONTENTS 



Origin of the Tempoeary Mississippi River 



Description of Course of the Temporary Mississippi River 



Goose Lake Channel 



Mud-Elkhom-Mud Creek Valley 



Cedar River Valley between Moscow and Columbus Junction 



Abandoned Channel South of Columbus Junction 

 Views Regarding the Duration of the Temporary Mississippi River 

 New Factors Bearing on the Duration of the Temporary Mississippi 



River 



Extinct Lake Calvin 



lUinoian Gumbotil 



ORIGIN OF THE TEMPORARY MISSISSIPPI RIVER 



The temporary Mississippi River referred to in the literature 

 by Leverett,^ Udden/ Carman,'' Norton,^ and others and published 

 on the "Preliminary Outline Map of the Drift Sheets of Iowa, 

 1904,"^ owed its existence to the displacement of the pre-Illinoian 

 Mississippi by the Illinois glacial lobe which pushed its way west- 

 ward into eastern Iowa. 



' Published by permission of the director, Iowa Geological Survey. 



== F. Leverett, "The lUhiois Glacial Lobe," U.S. Geol. Survey, Mongrapk XXXVIII 

 (1899), pp. 89-97; "Outline of Pleistocene History of Mississippi VaUey, Jour, of Geol., 

 Vol. XXIX (1921), pp. 615-26. 



3 J. A. Udden, "Geology of Muscatine County," Iowa Geol. Survey, Vol. IX (1899), 

 pp. 257-58, 350-57; "Geology of Louisa County," op. cit., Vol. XI (1901), pp. 63-64, 

 108-9. 



4 J. Ernest Carman, "The Mississippi Valley between Savanna and Davenport," 

 Illinois Geol. Survey, Bull. 13 (1909), pp. 57-63. 



sW. H. Norton, "Geology of Scott County," Iowa Geol. Survey, Vol. IX, 1899. 

 * Iowa Geol Survey, Vol. XIV (1903), Plate III. 



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