Coordinates: 40°24′N 109°18′W / 40.4°N 109.3°W / 40.4; -109.3

Nugget Sandstone

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Nugget Sandstone
Stratigraphic range: Norian-Toarcian
~220–180 Ma
File:Nuggest SS Wyo.jpg
Salmon-pink and white sandstones of the upper part of the Nugget Formation, Wind River Mountains, Wyoming
TypeGeological formation
Unit ofGlen Canyon Group
UnderliesCarmel Formation
OverliesChinle Formation
Thickness200 m (660 ft)
Lithology
PrimarySandstone
OtherMudstone, siltstone
Location
CoordinatesLua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value).
Approximate paleocoordinatesLua error: callParserFunction: function "#coordinates" was not found.
RegionColorado, Idaho, Utah
CountryUnited States
ExtentColorado Plateau
Nugget Sandstone (the United States)
Nugget Sandstone (Utah)
File:Nugget- Red Fleet Res 3.jpg
Nugget Sandstone near Red Fleet Reservoir, Uintah County, Utah. Uniform grain size and these large cross-stratification are indicative of an ancient sand dune.
File:Nugget bounding surface-Red Fleet.jpg
Nugget Sandstone showing a bounding surface between two sets of ancient sand dunes, where wind scour eroded the top of the lower dune before the second dune advanced over it. Red Fleet Reservoir, Uintah County, Utah.
File:Track site Red Fleet (2).jpg
Eubrontes track in the Nugget Sandstone, Red Fleet State Park, Uintah County, Utah.

The Nugget Sandstone is a Late Triassic to Early Jurassic geologic formation that outcrops in Colorado, Idaho, Wyoming, and Utah, western United States.

In Wyoming, it is composed of a lower hematite-stained siltstone and thin-bedded sandstone. The upper part is a salmon-pink and light-gray, fine- to medium-grained cliff-forming sandstone that exhibits massive bedding to large scale cross-beds of dunes. Thickness ranges up to 86.9 m (285 feet).[1]

Fossil theropod tracks have been reported from the formation.[2]

Fossil content

[edit | edit source]

Intermediate theropod, sphenosuchian, drepanosaurid and sphenodontian remains are known.[3]

Paleofauna reported from the Nugget Sandstone
Genus Species Material Notes Images
Caelestiventus[4] C. hanseni Most of the skull, a complete lower jaw, a finger bone A dimorphodontid pterosaur; one of the earliest known diagnostic pterosaurs in North America.
Other fossils

Ichnofossils

[edit | edit source]

See also

[edit | edit source]

References

[edit | edit source]
  1. ^ Johnson, J.F. and Sutherland, W.M., 2009, Geologic map of the Lander 30' x 60' quadrangle, Fremont County, Wyoming, Wyoming State Geological Survey, Map Series MS-87, 1:100,000.
  2. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ^ B. B. Britt, D. J. Chure, G. F. Engelmann and J. D. Shumway. 2016. Rise of the erg—paleontology and paleoenvironments of the Triassic-Jurassic transition in northeastern Utah. Geology of the Intermountain West 3:1-32
  4. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

Bibliography

[edit | edit source]
  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).

Further reading

[edit | edit source]
  • Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  • Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
  • Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Retrieved from "http://70.231.62.181/index.php?title=Nugget_Sandstone&oldid=19546418"