Fish Haven Dolomite

Fish Haven Dolomite
Stratigraphic range: Ordovician period
Type	Geologic formation
Underlies	Laketown Dolomite
Overlies	Eureka Quartzite
Thickness	3–570 feet (0.91–173.74 m)
Lithology
Primary	Dolomite
Location
Region	Idaho Nevada Utah
Country	United States
Type section
Named for	Fish Haven Creek
Named by	Richardson (1913)

The Fish Haven Dolomite is an Ordovician period geologic formation in southern Idaho, northeastern Nevada, and northwestern Utah.[1]

Geology

It was named for Fish Haven Creek, in the Bear River Range near the Utah-Idaho state line.[1] Other locations it is found in include the Schell Creek Range, Goshute Mountains, Deep Creek Range, Pilot Range, and Toana John Mountains.[1]

The Dolomite formation overlies the Eureka Quartzite formation, and underlies the Laketown Dolomite formation.[1]

The Fish Haven Dolomite, like the Ely Springs Dolomite, was formed by subtidal to intertidal shallow shelf carbonates, deposited in water depths of 100 feet (30 m) or less in lagoonal and shallow shoal settings.[1]

Fossils

The formation preserves fossils dating back to the Ordovician period of the Paleozoic Era.[2]

See also

• Ordovician United States
• List of fossiliferous stratigraphic units in Idaho
• List of fossiliferous stratigraphic units in Nevada
• List of fossiliferous stratigraphic units in Utah

References

1. Westerncordillera.com: Fish Haven Dolomite
2. Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.