Search results
Results from the WOW.Com Content Network
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.
The floral composition of the Chinle Formation (and other parts of Late Triassic North America) seem to shift with changes in climate over time. The lowest parts of the Chinle, such as the Shinarump Conglomerate , are dominated by the bennettitalean Eoginkgoites alongside the first occurrence of other persistent plants such as Phlebopteris ...
In the Chama Basin of New Mexico, the Chinle Formation is promoted to group status and the Petrified Forest Formation has the following members: [3] Painted Desert Member; Mesa Montoso Member; The Mesa Montosa Member is up to 22 meters (72 feet) thick and is mostly composed of sandstone (44%) and mudstone (35%), with a lesser proportion of ...
Moenkopi Formation below Chinle on cliff above Capitol Reef Scenic Drive The 50 to 110 foot (15 to 34 m) thick slope-forming Black Dragon is composed of reddish conglomerate , sandstone, and siltstone that were likely deposited on a coastal plain followed by a tidal flat . [ 6 ]
The Blue Mesa Member is a member of the Chinle Formation. It is located in the Petrified Forest National Park of northeast Arizona. [1] Geology
Purplish slopes made of the Chinle can be seen above the town of Rockville. The sand, gravel, and petrified wood which made up these deposits were later strongly cemented by dissolved silica (probably from volcanic ash from the west) in groundwater. [11] Much of the bright coloration of the Chinle is due to soil formation during the Late Triassic.
Chinlea is an extinct genus of late Triassic Mawsoniid coelacanth fish found in and named after the Chinle Formation that crops out in the southwestern states of Arizona and New Mexico. The word “Chinle” comes from the Navajo word meaning "flowing out", referencing the location where water flows out of the Canyon de Chelly.
The Dockum reaches a maximum thickness of slightly over 650 m but is usually much thinner. The Dockum rests on an unconformity over the Anisian (242–234 Ma) aged Anton Chico Formation. The Dockum and Chinle Formation were deposited roughly at the same time and share many of the same vertebrates and plant fossils.