Plainview Formation
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| Plainview Formation | |
|---|---|
| Stratigraphic range: Albian ~ | |
| Type | Geological formation |
| Unit of | Dakota Group |
| Underlies | Glencairn Formation |
| Overlies | Lytle Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Shale, siltstone |
| Location | |
| Coordinates | Lua error in Module:Coordinates at line 489: attempt to index field 'wikibase' (a nil value). |
| Approximate paleocoordinates | Lua error: callParserFunction: function "#coordinates" was not found. |
| Region | Colorado |
| Country | United States |
Plainview Formation (the United States) Plainview Formation (Colorado) | |
The Plainview Formation is an Early Cretaceous (Albian) geologic formation of the Dakota Group in Colorado.[1] Fossil ankylosaur tracks and tracks of Caririchnium sp. have been reported from the formation.[2]
Description
[edit | edit source]The formation overlies the Lytle Formation and is overlain by the Glencairn Formation and comprises resistant, brown-weathered sandstones, and dark shales and siilstones, also described as bioturbated brownish sandstones with black and grey silty or shaley sandstone intervals. The formation was deposited in a variety of near-shore and/or marginal marine environments. The tracks occur in the upper part of an estuarine point bar sequence, overlain by brackish bay or lagoon deposits.[1]
See also
[edit | edit source]References
[edit | edit source]- ^ a b Plainview Formation at Fossilworks.org
- ^ Weishampel et al., 2004, pp.517-607
Bibliography
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