Roubidoux Formation
| Roubidoux Formation Stratigraphic range: Ordovician |
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|---|---|
Outcrop of Roubidoux sandstone in the Missouri Ozarks
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| Type | Formation |
| Underlies | Jefferson City Formation in the Missouri Ozarks |
| Overlies | Gasconade Formation |
| Thickness | 100 to 300 feet |
| Lithology | |
| Primary | Sandstone |
| Other | Dolostone, chert |
| Location | |
| Region | Missouri, Virginia |
| Country | United States |
| Type section | |
| Named for | Roubidoux Creek, Texas and Pulaski counties, Missouri |
The Roubidoux Formation is a geologic formation in the Ozarks of Missouri and in Virginia. It preserves fossils dating back to the Ordovician period.
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Wikipedia