File:Structurally tilted Jurassic sedimentary rocks (Dinosaur National Monument, Utah, USA) 1 (48828518086).jpg

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These exposures in Dinosaur National Monument, Utah consist of structurally tilted, Jurassic-aged sedimentary rocks. I think the rocks in the right foreground are the lower Morrison Formation (Upper Jurassic). The gray and brown rocks along the middle of the picture are part of the Jurassic-aged Stump Formation, a marine, mixed-siliciclastics unit. Below (behind) the Stump are hidden outcrops of the Entrada Sandstone and Carmel Formation. The pinkish-colored rocks at top are the Glen Canyon Sandstone (Upper Triassic to Lower Jurassic), a local name for the Navajo Sandstone (also known as the Nugget Sanstone). The Glen Canyon/Navajo/Nugget is an eolian quartzose sandstone representing a widespread desert sand dune deposit - an erg facies.

Stratigraphy: Morrison Formation (Upper Jurassic) over Stump Formation (Middle Jurassic to Upper Jurassic) over . . . over Glen Canyon Sandstone (Upper Triassic to Lower Jurassic)

Locality: Fossil Discovery Trail, western Dinosaur National Monument, northern Uintah County, northeastern Utah, USA (vicinity of 40° 26' 30.98" North latitude, 109° 17' 56.89" West longitude)

See info. at: <a href="https://en.wikipedia.org/wiki/Dinosaur_National_Monument" rel="noreferrer nofollow">en.wikipedia.org/wiki/Dinosaur_National_Monument</a>

Geologic map of Dinosaur National Monument:

<a href="https://pubs.usgs.gov/imap/1407/plate-1.pdf" rel="noreferrer nofollow">pubs.usgs.gov/imap/1407/plate-1.pdf</a>
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Source Structurally tilted Jurassic sedimentary rocks (Dinosaur National Monument, Utah, USA) 1
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/48828518086. It was reviewed on 8 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

8 October 2019

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current00:43, 8 October 2019Thumbnail for version as of 00:43, 8 October 20194,288 × 2,418 (8.19 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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