Plainview Formation

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Plainview Formation
Stratigraphic range: Albian
~112–100  Ma
Type Geological formation
Unit of Dakota Group
Underlies Glencairn Formation
Overlies Lytle Formation
Lithology
Primary Sandstone
Other Shale, siltstone
Location
Coordinates 38°24′N105°18′W / 38.4°N 105.3°W / 38.4; -105.3
Approximate paleocoordinates 37°24′N61°42′W / 37.4°N 61.7°W / 37.4; -61.7
Region Colorado
Country United States
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Plainview Formation (the United States)
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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]

Contents

Description

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

References

  1. 1 2 Plainview Formation at Fossilworks.org
  2. ↑ Weishampel et al., 2004, pp.517-607

Bibliography

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