National Geologic Map Database
General Information
- Title: Pennsylvanian section in western Illinois
- Author(s): Wanless, H.R.
- Publishing Organization: Geological Society of America
- Series and Number: Bulletin v. 42, no. 3 [p. 801-812]
- Publication Date: 1931
- Map Scale: 1:4,100,000
- Cross Section: Yes
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Geologic units referred to in Geolex
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