File:Glen Canyon Sandstone over Chinle Formation (Dinosaur National Monument, Utah, USA) 9 (48872761577).jpg
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Summary
DescriptionGlen Canyon Sandstone over Chinle Formation (Dinosaur National Monument, Utah, USA) 9 (48872761577).jpg |
The cliff-forming rocks seen here are eolian sandstones in Dinosaur National Monument, Utah. The unit is locally called the Glen Canyon Sandstone, but it's equivalent to the Navajo Sandstone (elsewhere, it's called the Nugget Sandstone). The Navajo/Nugget/Glen Canyon is a thick quartzose sandstone succession with abundant cross-bedding. Cross-bedding refers to tilted layers between horizontal layers, and forms in a one-directional current by wind or water (in this case, wind). The sandstone is part of a sand dune deposit in an ancient, vast desert, or "sand sea", technically called an "erg". The reddish-colored, partly vegetated slopes below the Glen Canyon are part of the Upper Triassic Chinle Formation, a multicolored, nonmarine unit consisting of coarse-grained siliciclastics (fluvial channel facies) and fine-grained siliciclastics (floodplain facies). Quartz-permineralized fossil wood is famously common in the Chinle Formation (for example, at Petrified Forest National Park in Arizona). Stratigraphy: Glen Canyon Sandstone (Upper Triassic-Lower Jurassic) over Chinle Formation (Upper Triassic) Locality: outcrop near Cub Creek Road, Dinosaur National Monument, northern Uintah County, northeastern Utah, USA 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> |
Date | |
Source | Glen Canyon Sandstone over Chinle Formation (Dinosaur National Monument, Utah, USA) 9 |
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@N05/48872761577. It was reviewed on 13 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 October 2019
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9 June 2012
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:12, 13 October 2019 | 4,000 × 2,878 (8.8 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Exposure time | 1/250 sec (0.004) |
F Number | f/4.9 |
ISO speed rating | 80 |
Date and time of data generation | 16:29, 9 June 2012 |
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Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 15:46, 9 October 2019 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 16:29, 9 June 2012 |
Meaning of each component |
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APEX aperture | 4.59375 |
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Maximum land aperture | 4.59375 APEX (f/4.91) |
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File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Landscape |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 11:46, 9 October 2019 |
Unique ID of original document | 8843BBA46EAA071A51F15BEF0B8EA701 |