Group of geologic formations in the Colorado Plateau, USA
Glen Canyon Group
Stratigraphic range: Rhaetian–Toarcian
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Glen Canyon Group in southeast Utah. At top are massive beds of Navajo Sandstone separated by thinner beds of the Kayenta Formation from massive beds at bottom of the Wingate Sandstone.
The Glen Canyon Group is a geologic group of formations that is spread across the U.S. states of Nevada, Utah, northern Arizona, north west New Mexico and western Colorado. It is called the Glen Canyon Sandstone in the Green River Basin of Colorado and Utah.[1]
There are four formations within the group. From oldest to youngest, these are the Wingate Sandstone, Moenave Formation, Kayenta Formation, and Navajo Sandstone.[2] Part of the Colorado Plateau and the Basin and Range, this group of formations was laid down during the Late Triassic and Early Jurassic, with the Triassic-Jurassic boundary within the Wingate Sandstone.[3][4] The top of the Glen Canyon Group is thought to date to the Toarcian stage of the Early Jurassic.[5]
Asterisks (*) below indicate usage by the U.S. Geological Survey.
^Rowley, P.D.; Hansen, W.R. (1979). "Geologic map of the Plug Hat quadrangle, Moffat County, Colorado". U.S. Geological Survey Geologic Quadrangle Map. GQ-1514. Archived from the original on 19 September 2021. Retrieved 28 October 2021.
^Harshbarger, J.W.; Repenning, C.A.; Irwin, J.H. (1957). "Stratigraphy of the uppermost Triassic and the Jurassic rocks of the Navajo country". United States Geological Survey Professional Paper. Professional Paper. 291. doi:10.3133/pp291.
^Lucas, S. G.; Heckert, A.B.; Estep, J.W.; Anderson, O.J. (1997). "Stratigraphy, biostratigraphy, and sequence stratigraphy of the Upper Triassic Chinle Group, Four Corners region" (PDF). New Mexico Geological Society Field Conference Series. 48: 81–107. Archived (PDF) from the original on 28 October 2021. Retrieved 28 October 2021.
^Lucas, S.G.; Heckert, A.B.; Tanner, L.H. (2005). "Arizona's Jurassic fossil vertebrates and the age of the Glen Canyon Group". New Mexico Museum of Natural History and Science Bulletin. 29: 95–104. Retrieved 28 October 2021.
^Weishampel, David B.; Barrett, Paul M.; Coria, Rodolfo A.; Le Loueff, Jean; Xu, Xing Zhao Xijin; Sahni, Ashok; Gomani, Elizabeth M.P.; Noto, Christopher N. (2004). "Dinosaur distribution". In Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (eds.). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 517–606. ISBN 0-520-24209-2.
The GlenCanyonGroup is a geologic group of formations that is spread across the U.S. states of Nevada, Utah, northern Arizona, north west New Mexico...
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GlenCanyon National Recreation Area (shortened to GlenCanyon NRA or GCNRA) is a national recreation area and conservation unit of the United States National...
GlenCanyon Dam is a concrete arch-gravity dam in the southwestern United States, located on the Colorado River in northern Arizona, near the city of...
of the Chinle is sometimes found at the base of Chinle slopes. The GlenCanyonGroup of formations includes (from oldest - lowest - to youngest) the Wingate...
The Navajo Sandstone is a geological formation in the GlenCanyonGroup that is spread across the U.S. states of southern Nevada, northern Arizona, northwest...
GlenCanyonGroup sand dunes suggests that prevailing winds from the north transported the sand into the region. Outcrops of the GlenCanyonGroup's three...
The Moenave Formation is a Mesozoic geologic formation, in the GlenCanyonGroup. It is found in Utah and Arizona. The Moenave was deposited on an erosion...
The Kayenta Formation is a geological formation in the GlenCanyonGroup that is spread across the Colorado Plateau province of the United States, including...
The Wingate Sandstone is a geologic formation in the GlenCanyonGroup of the Colorado Plateau province of the United States which crops out in northern...
chronostratigraphic range of 15 million years. The Kayenta Formation is part of the GlenCanyonGroup that includes formations in northern Arizona, parts of southeastern...
Formation, all part of the GlenCanyonGroup, crop out along the cliffs' length. The Chinle Formation underlies the GlenCanyonGroup in the Echo Cliffs area...
GlenCanyon Park is a city park in San Francisco, California. It occupies about 70 acres (28 ha) along a deep canyon adjacent to the Glen Park, Diamond...
199 to 182 million years ago. The Kayenta Formation is part of the GlenCanyonGroup that includes formations not only in northern Arizona but also parts...
GlenCanyon Institute is a non-profit organization founded in 1996 dedicated to the restoration of the Colorado River through GlenCanyon, which is currently...
199 to 182 million years ago. The Kayenta Formation is part of the GlenCanyonGroup that includes formations not only in northern Arizona but also parts...
was created by the flooding of GlenCanyon by the GlenCanyon Dam, which also led to the 1972 creation of GlenCanyon National Recreation Area, a popular...
who, with a group of Spanish soldiers, explored southern Utah and traveled along the north rim of the canyon in Glen and Marble Canyons in search of...
Cataract Canyon is a 46-mile-long (74 km) canyon of the Colorado River located within Canyonlands National Park and GlenCanyon National Recreation Area...
deep cutting of the canyon walls. Sandstone exposed in canyons nearer to the Colorado River is typically from the GlenCanyonGroup. The dark red cliffs...
Tatisaurus. In 1989, scutes which were found in the Kayenta Formation (GlenCanyonGroup) of northern Arizona, were by Kevin Padian referred to a Scelidosaurus...
approximately 199 to 182 million years ago. This formation is part of the GlenCanyonGroup that includes formations not only in northern Arizona but also parts...
from the Lower Jurassic Navajo Sandstone, the uppermost unit of the GlenCanyonGroup, dating to the Pliensbachian stage, near Comb Ridge, San Juan County...
to excavate the canyon. Dams in particular have upset patterns of sediment transport and deposition. Controlled floods from GlenCanyon Dam upstream have...
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