Johnson Spring Formation
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| Johnson Spring Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation |
| Unit of | Eureka Group[1] |
| Underlies | Barrel Spring Formation |
| Overlies | Ely Springs Dolomite |
| Thickness | between 114 feet (35 m) and 398 feet (121 m)[2] |
| Location | |
| Region | Inyo Mountains, California |
| Country |  U.S.A. |
| Type section | |
| Named by | Harold Richard Pestana[2] |
The Johnson Spring Formation is a geologic formation in California.[3] It preserves fossils dating back to the Ordovician period.[4]
Previously described as undifferentiated upper part of Eureka group by Langenheim and others, Pestana formally named the formation in 1960.[2] The Johnson Springs Formation underlies the Barrel Spring Formation and overlies the Ely Springs Dolomite.[5]
The type section is in Lead Canyon Trail section of the Independence quadrangle, Inyo Mountains.[5]
See also
References
- ^ No label or title -- debug: Q96655744, Wikidata Q96655744
- ^ a b c No label or title -- debug: Q61048695, p. 18, Wikidata Q61048695
- ^ No label or title -- debug: Q96655687, Wikidata Q96655687
- ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
- ^ a b "Johnson Spring Formation". USGS Geologic Names Committee Archives. USGS. Retrieved June 26, 2020.
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