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You searched for: geology Remove constraint geology Publisher Illinois State Geological Survey Remove constraint Publisher: Illinois State Geological Survey Subject Geoscientific Information Remove constraint Subject: Geoscientific Information Type Service Remove constraint Type: Service
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1. Physiographic Divisions: Illinois, 2004

1993. Illinois State Geological Survey. This is an ESRI feature class showing boundaries for physiographic divisions in Illinois. Data are originally from ISGS Report of Investigations 12...

2. Quaternary Deposits: Illinois, 1979

1979. Illinois State Geological Survey. Digital representation of the Quaternary Deposits in Illinois map by Lineback (1979). Map scale is 1:500,000. Shows Quaternary deposits that lie at...