Johnnie Formation
| Johnnie Formation | |
|---|---|
| Stratigraphic range: Ediacaran | |
| Type | Geologic formation |
| Sub-units | See: Members |
| Underlies | Stirling Quartzite Formation |
| Overlies | Noonday Dolomite |
| Area | 10,000 sq mi (26,000 km2) |
| Thickness | 0–5,000 feet (0–1,524 m) |
| Lithology | |
| Primary | Shale |
| Other | Siltstone, Quartzite, Conglomerate, Limestone and Dolomite |
| Location | |
| Region | Mojave Desert, California and Nevada |
| Country | United States |
The Johnnie Formation is a geologic formation in the northern Mojave Desert of Inyo County, California and Nevada.
It can be seen in the Providence Mountains and Kelso Mountains. It also preserves microbial mat structures dating back to the Ediacaran period of the Neoproterozoic Era.