The Aztec Sandstone is an
Early Jurassic geological
formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondary ...
of primarily
eolian sand from which fossil
pterosaur tracks have been recovered.
[Aztec Sandstone]
at Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...
.org The formation is exposed in the
Mojave Desert of
Arizona,
California and
Nevada.
Description
The Aztec Sandstone is made up of two units. The lower resistant sandstone unit ( thick) is tan to off-white in outcrops but pinkish in fresh exposures. Crosbedded lenses can easily be observed. Frosted and pitted quartz grains well-cemented by silica are described by Evans in 1958 and 1971. The upper and less resistant unit (200m thick) consists of alternating white quartz
arenites and red to brown silty sands.
[Mescal Range]
at Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...
.org
Vertebrate paleofauna
The formation has provided the following
ichnofossils attributed to vertebrates:
[
]
See also
* List of fossil sites
* List of fossiliferous stratigraphic units in California
This article contains a list of fossil-bearing stratigraphic units in the state of California, U.S.
Sites
See also
* Paleontology in California
References
*
{{DEFAULTSORT:Fossiliferous stratigraphic units in California
California
S ...
* List of fossiliferous stratigraphic units in Nevada
This article contains a list of fossil-bearing stratigraphic units in the state of Nevada, U.S.
Sites
See also
* Paleontology in Nevada
References
*
{{DEFAULTSORT:Fossiliferous stratigraphic units in Nevada
Nevada
Nevada ( ; ) i ...
References
Bibliography
*
* Lockley, M.; Harris, J.D.; and Mitchell, L. 2008. "A global overview of pterosaur ichnology: tracksite distribution in space and time." ''Zitteliana''. B28. p. 187-198. .
*
* Hilton, Richard P. 2003. Dinosaurs and Other Mesozoic Reptiles of California. Berkeley: University of California Press. 318 pp.
Further reading
* R. E. Reynolds. 1986. California trackways from the Lower Jurassic Aztec Sandstone. In D. D. Gillette (ed.), First International Symposium on Dinosaur Tracks and Traces. Abstracts with Program 24
{{Chronostratigraphy of Nevada
Geologic formations of Arizona
Geologic formations of California
Geologic formations of Nevada
Jurassic Arizona
Jurassic California
Jurassic geology of Nevada
Sandstone formations of the United States
Geologic formations with imbedded sand dunes
Aeolian deposits
Ichnofossiliferous formations
Paleontology in California
Paleontology in Nevada