Dugger Formation
The Dugger Formation is a geologic formation in Indiana.[1]
| Dugger Formation Stratigraphic range: Pennsylvanian | |
|---|---|
| Type | Formation |
| Unit of | Carbondale Group |
| Underlies | Shelburn Formation |
| Overlies | Petersburg Formation |
| Location | |
| Region | Indiana |
| Country | United States |
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