Carlile Shale
The Carlile Shale is a Turonian age Upper/Late Cretaceous series shale geologic formation in the central-western United States, including in the Great Plains region of Colorado, Kansas, Nebraska, New Mexico, North Dakota, South Dakota, and Wyoming.
| Carlile Shale | |
|---|---|
| Stratigraphic range: Turonian ~ | |
Rare exposure of the Fairport Chalk member of the Carlile Shale in southern Ellis County, Kansas | |
| Type | Geological formation |
| Unit of | Colorado Group (lower); or Benton Formation Mancos Group (NM) |
| Sub-units | Juana Lopez (CO, NM) Codell Sandstone Blue Hill Shale Fairport Chalk |
| Underlies | Niobrara Formation |
| Overlies | Greenhorn Limestone |
| Thickness | 170–230 feet (52–70 m) |
| Lithology | |
| Primary | Shale, chalky to carbonaceous |
| Other | Limestone Sandstone Siltstone Septarians Bentonite |
| Location | |
| Coordinates | 38.376°N 104.979°W |
| Region | Mid-continental |
| Country | United States |
| Type section | |
| Named for | Carlile Spring and Carlile Station, 21 mi west of Pueblo, Colorado |
| Named by | Gilbert |
| Year defined | 1896 |
Carlile Shale (the United States) Carlile Shale (Colorado) | |
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