Carlile Formation
| Carlile Formation Stratigraphic range: Turonian Upper/Late Cretaceous, ~89.8–93.9 Ma | |
|---|---|
| Type | Geological formation |
| Unit of |
Colorado Group (lower); or Benton Formation |
| Sub-units |
Codell Sandstone Blue Hill Shale Fairport Chalk |
| Underlies | Niobrara Formation |
| Overlies | Greenhorn Formation |
| Thickness | 170–230 feet (52–70 m) |
| Lithology | |
| Primary | shale, chalky to carbonaceous |
| Other |
limestone sandstone siltstone septarians bentonite |
| Location | |
| Region | mid-continental |
| Country | United States |
| Type section | |
| Named for | Carlile Spring and Carlile Station, 21 mi west of Pueblo, Colorado[1] |
| Named by | Gilbert, 1896 |
The Carlile Formation 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.[2]
It is composed of marine deposits of the Cretaceous Seaway of the Western Interior.[3] In some regions it overlies the Greenhorn Formation, and underlies the Niobrara Formation.
- Fossils
Upper Turonian series Plesiosaur remains are among the fossils that have been recovered from its strata from its Blue Hill Shale Member in Kansas.[4]
See also
References
- ↑ "Geologic Unit: Carlile". National Geologic Database. Geolex — Unit Summary. United States Geological Survey. Retrieved 2017-02-03.
- ↑ USGS.gov: Mineral resources of the Niobrara and Carlile Formations
- ↑ Archives.datapages.com: Stratigraphy of the Carlile Formation and Niobrara Formation (Upper Cretaceous)
- ↑ Jstor.org: "Probable plesiosaur remains from the Blue Hill Shale (Carlile Formation)" in Kansas", Kansas Academy of Science, 2009.
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