Browse Illinois State Geological Survey (ISGS) by Subject "Thematic maps"

  • Abert, Curtis C.; Marshak, Stephen; Larson, Timothy H. (Champaign, Ill.: Illinois State Geological Survey, Prairie Research Institute, 2016)
    Map 1. Land surface topography -- Map 2. Bedrock topography -- Map 3. Surficial geology with shaded relief -- Map 4. Bedrock geology with bedrock topography -- Map 5. Structure contours of the top of the Pennsylvanian ...


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