Orr Formation

Last updated
Orr Formation
Stratigraphic range: Cambrian
Stromatolitic limestone (Big Horse Limestone Member, Orr Formation, Middle Cambrian; Orr Ridge, House Range, Utah, USA) 3 (44840227425).jpg
Stromatolitic limestone (Big Horse Limestone Member; Utah)
Type Geological formation
Sub-units Big Horse Limestone Member
Thickness1,825 feet [1]
Location
Region Utah
Country United States
Extent House Range
Type section
Named forOrr Ridge
Named by Charles D. Walcott [1]
Year defined1910 [1]

The Orr Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period. [1]

See also

References

  1. 1 2 3 4 Walcott, Charles D. (1910). "Nomenclature of some cambrian cordilleran formations". Smithsonian Miscellaneous Collections. 53 (1): 1–12.


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