Joana Limestone

The Joana Limestone is a limestone geologic formation in White Pine County and Nye County Nevada.

Description
The Joana Limestone was named for exposures at the Joana Mine on the south side of Robinson Canyon, 2 miles north of Ely, Nevada.

It was formed during the Early Mississippian series of the Carboniferous Period.

It preserves fossils dating back to the Carboniferous period.