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Category:Geologic formations of Illinois

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Subcategories

This category has the following 2 subcategories, out of 2 total.

P

Paleozoic Illinois (5 C, 3 P)

Σ

Illinois geologic formation stubs (52 P)

Pages in category "Geologic formations of Illinois"

The following 8 pages are in this category, out of 8 total. This list may not reflect recent changes.

B

F

Francis Creek Shale

I

Illinois Basin

M

P

Patoka Formation

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