| Speiser Shale Stratigraphic range: Permian | |
|---|---|
| Type | Formation |
| Unit of | Council Grove Group [1] |
| Lithology | |
| Primary | Shale |
| Other | Mudstone |
| Location | |
| Region | Kansas, Oklahoma, Nebraska |
| Country | United States |
| Type section | |
| Named for | Speiser Township of Richardson County, Nebraska [1] |
The Speiser Shale or Speiser Formation is a geologic formation in Kansas, Oklahoma, and Nebraska dating to the early Permian period. [1]
The Kiowa Formation or Kiowa Shale is a Cretaceous geologic formation in Kansas, diminshing to member status in Colorado and Oklahoma. In Colorado, the Kiowa Shale is a member of the Purgatoire Formation. In the vicinity of Longford, Kansas, the local Longford member comprises thinly bedded siltstone, clay, polished gravel, lignite, and sandstone suggests a river and estuary environment.
The Kansas City Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
The Oread Limestone is a geologic unit of formation rank within the Shawnee Group throughout much of its extent. It is exposed in Kansas, Nebraska, Missouri, Oklahoma, and Iowa. The type locality is Mount Oread within Lawrence, Kansas. It preserves fossils of the Carboniferous period. Although it has significant shale members, its limestone members are resistant and form escarpments and ridges. Limestone from the unit is a historic building material in Kansas, particularly in the early buildings of the University of Kansas; standing examples include Spooner Hall and Dyche Hall.
The Graneros Shale is a geologic formation in the western United States, east of the Rocky Mountains. It preserves fossils dating back to the Cenomanian Age of the Cretaceous period.
The Greenhorn Limestone or Greenhorn Formation is a geologic formation in the Great Plains Region of the United States, dating to the Cenomanian and Turonian ages of the Late Cretaceous period.
The Valentine Formation is a geologic formation or member within the Ogallala unit the out crops in South Dakota, Nebraska, and Kansas. It preserves fossils dating to the Neogene period and is particularly noted for Canid fossils.
The Beattie Formation, or Beattie Limestone, is a geologic formation in east-central Kansas, northeast-central Oklahoma, and southeastern Nebraska in the Midwestern United States. It preserves fossils dating to the Permian period.
The Council Grove Group is a geologic group in Kansas, Oklahoma, and Nebraska as well as subsurface Colorado. It preserves fossils dating to the Carboniferous-Permian boundary. This group forms the foundations and lower ranges of the Flint Hills of Kansas, underlying the Chase Group that forms the highest ridges of the Flint Hills.
The Wabaunsee Formation is a geologic formation in Kansas. It preserves fossils dating back to the Carboniferous period.
The Wellington Formation is a geologic formation in Kansas and Oklahoma. It preserves fossils dating back to the Permian period.
The Eskridge Shale or Eskridge Formation is a geologic formation in Kansas, Oklahoma, and Nebraska dating to the early Permian period.
The Rexroad Formation is a geologic formation in Kansas. It preserves fossils dating back to the Neogene period. These fossils include two types of skunk, a tree bat, a ringtail, several snakes, such as Elaphe obsoleta, and a turkey.
The Foraker Formation is a geologic formation in Nebraska, Kansas, and Oklahoma. It preserves fossils dating to the Carboniferous period.
The Johnson Formation is a thick geologic formation of soft shale with thin, resistant beds of chalkier mudstone and limestone in Nebraska, Kansas, and Oklahoma rarely exposed outside of road cuts. It preserves fossils dating back to the late-Carboniferous period.
The Red Eagle Formation is a geologic formation in Oklahoma and Kansas, United States. It preserves fossils dating to the Carboniferous-Permian boundary.
The Grenola Formation is an early Permian geologic formation (Wolfcampian) with its exposure running north and south through Kansas and extending into Nebraska and Oklahoma, notably having the Neva Limestone member, a terrace-forming aquifer and historic Flint Hills building stone source secondary to the Cottonwood Limestone.
The Blanco Formation, originally named the Blanco Canyon Beds, is an early Pleistocene geologic formation of clay, sand, and gravel whitened by calcium carbonate cementation and is recognized in Texas and Kansas.
The Benton Shale is a geologic formation in Montana, Wyoming, North Dakota, South Dakota, Colorado, Kansas, and Nebraska. It preserves fossils dating to the Cretaceous Period. The term Benton Limestone has also been used to refer to the chalky portions of the strata, especially the upper beds of the strata presently classified as Greenhorn Limestone. The Benton classification is obsolete in some regions, having been replaced by the ascending sequence Graneros Shale, Greenhorn Limestone, and Carlile Shale.
The Fort Hays Limestone is a member of the Niobrara Formation of the Colorado Group exposed in Colorado, Kansas, Nebraska, and South Dakota and is named for the bluffs near the old Fort Hays, a well-known landmark in western Kansas.
The Roca Formation is an early Permian geologic formation (Wolfcampian) with its exposure running north and south through Kansas and extending into Nebraska and Oklahoma, notably comprising varicolored black, brown, gray, green, red, and blue shales, mudstones, and limestone, some of which representing Permian paleosols.
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