| Gower Formation | |
|---|---|
| Stratigraphic range: Silurian | |
| Type | Formation |
| Underlies | Unconformity Devonian |
| Overlies | Scotch Grove Formation |
| Lithology | |
| Primary | dolomite |
| Location | |
| Region | Illinois and Iowa |
| Country | United States |
The Gower Formation is a geologic formation in Illinois and Iowa. [1] It preserves fossils dating back to the Silurian period.
The Harrodsburg Limestone is a geologic formation, a member of the Sanders Group of Indiana Limestone, of Mississippian age. It was named for Harrodsburg in southern Monroe County, Indiana by T. C. Hopkins and C. E. Siebenthal. It is made up primarily of calcarenite and calcirudite. It also may include some beds of dolomite and shale.
The Salem Formation is a geologic formation in Illinois, Indiana, Kentucky, and Missouri. It preserves fossils dating back to the Mississippian subperiod. This formation is quarried and used as a building material, known as "Indiana limestone", also called Bedford limestone.
The Cedar Valley Group is a geologic group in Iowa and Illinois. It preserves fossils dating back to the Devonian period.
The Chouteau Limestone is a geologic formation in Illinois, Iowa, Kansas, and Missouri. It preserves fossils dating back to the Carboniferous period.
The Keokuk Limestone is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian sub-period.
The Bond Formation is a geologic formation in Illinois, Kentucky and Indiana. It preserves fossils dating back to the Carboniferous period.
The Patoka Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod.
The Brainard Shale is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
The Neda Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
The Scales Shale is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
The Pecatonica Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
The Quimbys Mill Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period.
The Burlington Limestone is a geologic formation in Missouri, Iowa and the Midwest region. It preserves fossils dating back to the Mississippian subperiod.
The Hampton Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The St. Louis Formation is a geologic formation in Iowa. It preserves fossils dating back to the Carboniferous period.
The Coralville Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The Spillville Formation is a geologic formation in Iowa. It preserves fossils dating back to the Devonian period.
The Saturday Mountain Formation is a geologic formation in Idaho and Iowa.
The Cummingsville Formation is a geologic formation in Iowa and Minnesota. It preserves fossils dating back to the Ordovician period.
 | This article about a specific stratigraphic formation in Illinois is a stub. You can help Wikipedia by expanding it. |
| | This article about a specific stratigraphic formation in Iowa is a stub. You can help Wikipedia by expanding it. |
