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]
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]