Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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You searched for: Subject Geology Remove constraint Subject: Geology Collection Illinois Geospatial Data Clearinghouse Remove constraint Collection: Illinois Geospatial Data Clearinghouse Year 1996 Remove constraint Year: 1996
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Bedrock Geology of Illinois - Geologic Units, 2004

Bedrock Geology of Illinois - Geologic Units, 2004

1996. Illinois State Geological Survey. This feature class shows the distribution and extent of the bedrock geologic units within the State of Illinois, as depicted on the Geologic Map of...


Quaternary Deposits: Illinois, 1996

1996. Barb Stiff. This feature dataset is a generalized version of Quaternary Deposits of Illinois. Updated to reflect the areal distribution of the Wedron and Mason...