The Langston Formation is a geologic formation in Idaho and Utah. It preserves fossils dating back to the Cambrianperiod. 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.
Geology
This section is empty. You can help by adding to it. (January 2016)