File:Grand Canyon of the Yellowstone River (Yellowstone, Wyoming, USA) 271.jpg
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DescriptionGrand Canyon of the Yellowstone River (Yellowstone, Wyoming, USA) 271.jpg |
English: This spectacular and colorful valley in Yellowstone, Wyoming is the Grand Canyon of the Yellowstone River. Two large waterfalls occur along this stretch of the river - Upper Falls and Lower Falls. The rocks of the canyon include rhyolite lava flows, rhyolitic volcanic tuffs, and some sedimentary deposits - all are geologically young and date to the Quaternary. The yellows, pinks, reds, and oranges indicate the presence of hydrothermally altered rocks. Hydrothermal metamorphism refers to the intense alteration by superheated groundwater. Yellowstone has over 100,000 hydrothermal features in the form of hot springs, geysers, fumaroles, frying pans, and mudpots, so hydrothermal alteration is fairly common in the area.
From park signage: The Force of Water This canyon has been a work in progress for at least the last 12,000 years. After the last caldera forming eruption 640,000 years ago, this area was covered by a series of lava flows. Rising hot magma caused the earth to dome and erosion to occur at a faster rate. This heat also drove superheated water through the hardened lava, altering it to the reds and yellows around you. As the river flowed through this softer rock, a V-shape was eventually carved, forming a canyon. This process may have had a little help though. It is possible that ice dams formed upriver near the end of the last glacial period. When these dams melted or broke, a giant torrent of water would have rushed downstream, resulting in the immediate and catastrophic erosion of the present canyon. This may have happened more than once. The Yellowstone River continues the process in a slower manner today. Locality: view from the Inspiration Point area, northern rim of the Grand Canyon of the Yellowstone River, northwestern Wyoming, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/53025570688/ |
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@N05/53025570688. It was reviewed on 6 July 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
6 July 2023
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current | 14:01, 6 July 2023 | 3,000 × 4,000 (7.7 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53025570688/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/250 sec (0.004) |
F-number | f/3.5 |
ISO speed rating | 80 |
Date and time of data generation | 15:03, 17 June 2023 |
Lens focal length | 9.681 mm |
Width | 3,000 px |
Height | 4,000 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 14:10, 5 July 2023 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 15:03, 17 June 2023 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 7.96875 |
APEX aperture | 3.625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.625 APEX (f/3.51) |
Metering mode | Pattern |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
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 | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 10:10, 5 July 2023 |
Unique ID of original document | 233A853BAC842DEFA05DA4640CF0AB2F |
IIM version | 32,767 |