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Bedrock Geology of Illinois - Geologic Units, 2004

Author:
Description:
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 Illinois (1967) by Willman and others, published by the Illinois State Geologic Survey.
Collection:
Illinois Geospatial Data Clearinghouse
Place:
Illinois, United States
Subjects:
Geoscientific Information and Geology
Year:
1996
Contributed by:
Illinois
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