Cody Shale

Cody Shale Stratigraphic range: Late Cretaceous
Type	Sedimentary
Sub-units	see text
Underlies	Mesaverde Formation
Overlies	Frontier Formation
Thickness	500-1000 m
Lithology
Primary	shale
Location
Region	Montana folded belt province, Central Montana uplift, Big Horn basin, Powder River basin, Wind River basin
Country	United States
Extent	Wyoming, Idaho, Montana
Type section
Named for	Cody, Wyoming
Named by	C. T. Lupton, 1916

The Cody Shale is a Late Cretaceous geologic formation. It is mapped in Wyoming, Idaho, and Montana.

The formation is described by W.G. Pierce as follows: upper part is buff, sandy shale and thinly laminated buff sandstone; lower part is dark gray, thin-bedded marine shale.

The formation is divided into many members (alphabetical):

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