The Chinle Formation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the U.S. states of Nevada, Utah, northern Arizona, western New Mexico, and western Colorado. In New Mexico, it is often raised to the status of a geological group, the Chinle Group. Some authors have controversially considered the Chinle to be synonymous to the Dockum Group of eastern Colorado and New Mexico, western Texas, the Oklahoma panhandle, and southwestern Kansas. The Chinle Formation is part of the Colorado Plateau, Basin and Range, and the southern section of the Interior Plains.[1] A probable separate depositional basin within the Chinle is found in northwestern Colorado and northeastern Utah. The southern portion of the Chinle reaches a maximum thickness of a little over 520 meters (1,710 ft). Typically, the Chinle rests unconformably on the Moenkopi Formation.
The Chinle Formation was probably mostly deposited in the Norian stage, according to a plethora of chronological techniques. It is a thick and fossiliferous formation with numerous named members (subunits) throughout its area of deposition.
^GEOLEX database entry for Chinle, USGS (viewed 19 March 2006)
The ChinleFormation is an Upper Triassic continental geological formation of fluvial, lacustrine, and palustrine to eolian deposits spread across the...
The ChinleFormation is an extensive geological unit in the southwestern United States, preserving a very diverse fauna of Late Triassic (primarily Norian-age)...
The ChinleFormation is an Upper Triassic continental geologic formation in the western United States which has yielded fossils of many archosaurs: a group...
Moenkopi formations, streams and lakes of the Chinle, Moenave, and Kayenta formations to the large deserts of the Navajo and Temple Cap formations and dry...
in the area reveal ancient climates as varied as rivers and swamps (ChinleFormation), Sahara-like deserts (Navajo Sandstone), and shallow ocean (Mancos...
containing the fossil logs are part of the widespread and colorful ChinleFormation, from which the Painted Desert gets its name. Beginning about 60 million...
(Laurasian) continents, and fossils are particularly common in the ChinleFormation and Dockum Group of the southwestern United States. Most fossils have...
been found so far. There are pits associated with footprints in the ChinleFormation, but these "nests" are apparently the result of sandstone weathering...
unconformity over the Anisian (242–234 Ma) aged Anton Chico Formation. The Dockum and ChinleFormation were deposited roughly at the same time and share many...
slope-forming ChinleFormation were laid down on top of this eroded surface. Petrified wood from the Petrified Forest Member of the Chinle is sometimes...
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from...
(Archosauromorpha: Allokotosauria) from two monodominant bonebeds in the ChinleFormation (Upper Triassic, Norian) of Arizona". Journal of Paleontology. 96 (S90):...
an older subunit of the Chinle Group (or formation), overlying the Shinarump Conglomerate and underlying the Poleo Formation. The unit was originally...
(2024) identify a specimen of Machaeroprosopus mccauleyi from the ChinleFormation with a sacrum including a sacralized first caudal vertebra, expanding...
Baldwin, had found the first remains of the dinosaur in 1881 in the ChinleFormation in northwestern New Mexico. Early in 1887, Cope referred the specimens...
Machaeroprosopus, was named in 1916 on the basis of three complete skulls from ChinleFormation, Arizona. The skulls have been lost since the 1950s, and a line drawing...
Triassic. The shuvosaurid Effigia, from the "siltstone member" of the ChinleFormation in New Mexico, may be as young as the Rhaetian, the last stage of the...
the formation, which laterally interfingers with the Moenave Formation to the west, is Early Jurassic in age. Hoodoo within the ChinleFormation, west...
location ol Canyon de Chelly National Monument. Chinle Valley is one of the locations for the ChinleFormation, (no type locality), of Arizona, Utah, New Mexico...
were found near St. Johns, southeast of the Petrified Forest in the ChinleFormation of Arizona. This site has become known as the 'Placerias Quarry' and...
Rafael Group. The Glen Canyon Group is separated from the underlying ChinleFormation by the regional J-0 unconformity, which represents a time of widespread...
Chinlestegophis, a stereospondyl temnospondyl from the Late Triassic ChinleFormation of Colorado, was proposed to be a stem-caecilian in a 2017 paper by...
species is known from massive tree trunks that weather out of the ChinleFormation in desert badlands of northern Arizona and adjacent New Mexico, most...
and Arizona. The Moenave was deposited on an erosion surface on the ChinleFormation following an early Jurassic uplift and unconformity that represents...
bed, member, formation, group and supergroup. Formal names of lithostratigraphic units are assigned by geological surveys. Units of formation or higher rank...
assigned Herbert E. Gregory's (1917) "A" division of the ChinleFormation to the Wingate Formation as the Rock Point Member. It was named for Rock Point...
Formation), and Europe (Sardinia). The oldest body fossils assigned to crayfish are known from the Late Triassic (~230-200 million years ago) Chinle Formation...
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