The Cody Shale is a Late Cretaceous geologic formation.
Pierce as follows: upper part is buff, sandy shale and thinly laminated buff sandstone; lower part is dark gray, thin-bedded marine shale.
[2] The formation is divided into many members that vary regionally.
Alphabetically:[3] Certain members rise to formation rank in other areas; for example, the Greenhorn is classified as a formation in a number of states, particularly in Colorado and Kansas.
This article about a specific stratigraphic formation in the United States is a stub.