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Glacial Terrain of Illinois

By National Cooperative Geologic Mapping Program 2025 (approx.)
Map of the state of Illinois including county boundaries showing distribution of glacial deposits in different colors.
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Detailed Description

This map shows the generalized glaciated terrain of the state of Illinois. For more information, visit the Illinois State Geological Survey website. 

Sources/Usage

Public Domain.

This image is used with the permission of the Illinois State Geological Survey.

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