Dubuque Formation
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Not to be confused with DeBeque Formation.
Dubuque Formation | |
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Stratigraphic range: Ordovician | |
Type | Formation |
Underlies | Maquoketa Formation |
Overlies | Galena Group |
Location | |
Region | Illinois, Minnesota |
Country | ![]() |
The Dubuque Formation is a geologic formation in Illinois, Iowa, Wisconsin and Minnesota. It preserves fossils dating back to the Ordovician period.
See also
[edit]References
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