Frontier Formation

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Frontier Formation
Stratigraphic range: Cenomanian-Coniacian
Frontier Sandstone (Upper Cretaceous; western Dinosaur National Monument, Utah, USA) 14 (48822462432).jpg
Frontier Formation in Utah (Dinosaur National Monument)
Type Geological formation
Sub-unitsTorchlight Sandstone Member, Peay Sandstone Member
Underlies Cody Shale
Overlies Mowry Shale, Thermopolis Shale
Lithology
Primary Sandstone
Other Shale
Location
Region North America
CountryUnited States
Extentsee text
Type section
Named byW. C. Knight, 1902 [1]
Giant concretions in the Frontier Formation, northern end of the San Rafael Swell, Emery County, Utah. Frontier Fm.jpg
Giant concretions in the Frontier Formation, northern end of the San Rafael Swell, Emery County, Utah.

The Frontier Formation is a sedimentary geological formation whose strata date back to the Late Cretaceous. The formation's extents are: northwest Colorado, southeast Idaho, southern Montana, northern Utah, and western Wyoming. It occurs in many sedimentary basins and uplifted areas.

Contents

The formation is described by W.G. Pierce as thick, lenticular, grey sandstone, gray shale, carbonaceous shale, and bentonite. [2]

Dinosaur remains are among the fossils that have been recovered from the formation. [3]

Vertebrate paleofauna

Other paleofauna

See also

Related Research Articles

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Bearpaw Formation Geologic formation in North America

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Arundel Formation

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Wayan Formation

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Foremost Formation

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St. Mary River Formation

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The Almond Formation is a geological formation of Late Cretaceous age in Wyoming. It was deposited in marsh, deltaic, lagoonal, estuarine, and shallow marine environments along the western shore of the Western Interior Seaway. It consists primarily of fine- to medium-grained sandstone, siltstone, shale, and coal. Fossils from the Almond Formation include remains of dinosaurs and plants.

Meeteetse Formation

The Meeteetse Formation is a Late Cretaceous geologic formation occurring in Wyoming.

Mowry Shale

The Mowry Shale is an Early Cretaceous geologic formation. The formation was named for Mowrie Creek, northwest of Buffalo in Johnson County, Wyoming.

Mesaverde Group Group of geologic formations in the western United States

The Mesaverde Group is a Late Cretaceous stratigraphic group found in areas of Colorado, New Mexico, Utah, and Wyoming, in the Western United States.

References

  1. W.C. Knight, 1902, Eng. and Min. Jour., v. 73, p. 721
  2. Pierce, W.G., 1997, Geologic map of the Cody 1 degree x 2 degrees quadrangle, northwestern Wyoming: U.S. Geological Survey, Miscellaneous Geologic Investigations Map I-2500, scale 1:250000.
  3. Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, North America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 574-588. ISBN   0-520-24209-2.
  4. "Table 17.1," in Weishampel, et al. (2004). Page 367.
  5. Panasci, Giulio; Varricchio, David J.; Martin, Anthony (October 10, 2021). "TRACKS OF ORNITHOPODS PUTTING THEIR BEST FEET FORWARD IN THE FRONTIER FORMATION (CONIACIAN), MONTANA". Geological Society of America Abstracts with Programs. 53 (6) via The Geological Society of America (GSA) Connects 2021.