Langston Formation | |
Type: | Formation |
Age: | Cambrian |
Period: | Cambrian |
Namedfor: | Langston Creek |
Namedby: | Charles Doolittle Walcott |
Region: | Idaho, Utah |
Country: | United States |
Underlies: | Ute Formation |
Overlies: | Brigham Formation |
Thickness: | 30 - 498' |
The Langston Formation is a geologic formation in Idaho and Utah. It preserves fossils dating back to the Cambrian period. The formation is composed of bluish-gray limestone,[1] weathering to a buff color, often with rounded edges.[2]
Blacksmith Fork is the type locality, and includes more fossils than the Idaho sections.
The Langston Formation includes the fossilerous Spence Shale.