Quadrangle Maps

River Forest Surficial Geology 1939 River Forest Surficial Map
Roanoke Surficial Geology 2015 54” x 40” sheet, includes map, legend, 4 figures, and descriptive text.  Map is available for download only. This map has not been reviewed by the Illinois State Geological Survey and does not necessarily conform to the usual style and standards for ISGS publications.
Rochelle Bedrock Geology 2019 Bedrock geology of Rochelle Quadrangle, map thumbnail, sheet 1
Rockwood Bedrock Geology 2005 Rockwood Bedrock Map
Rome Surficial Geology 2010 Rome Surficial Map
Romeoville Surficial Geology 2017
Rosiclare Bedrock Geology 2011 Rosiclare Bedrock Map
Karbers Ridge, Rosiclare Surficial Geology 1965 Karbers Ridge Surficial Map
Rudement Geology 1986 Rudement Geology Map
Sag Bridge Surficial Geology 2015 Surficial Geology of Sag Bridge Quadrangle

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