| Joana Limestone | |
| Type: | Formation |
| Age: | Early Mississippian series Carboniferous Period |
| Prilithology: | Limestone |
| Namedfor: | Joana Mine |
| Namedby: | Spencer, 1917 |
| Region: | White Pine County, Nye County Nevada |
| Country: | United States |
| Unitof: | White Pine Group |
| Underlies: | Chainman Formation |
| Overlies: | Pilot Formation |
The Joana Limestone is a limestone geologic formation in White Pine County and Nye County Nevada.
The Joana Limestone was named for exposures at the Joana Mine on the south side of Robinson Canyon, 2 miles north of Ely, Nevada.[1]
It was formed during the Early Mississippian series of the Carboniferous Period.
It preserves fossils dating back to the Carboniferous period.[2]