File:Fossil wood (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1.jpg
![File:Fossil wood (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/Fossil_wood_%28Morrison_Formation%2C_Upper_Jurassic%3B_Escalante_Petrified_Forest_State_Park%2C_Utah%2C_USA%29_1.jpg/800px-Fossil_wood_%28Morrison_Formation%2C_Upper_Jurassic%3B_Escalante_Petrified_Forest_State_Park%2C_Utah%2C_USA%29_1.jpg?20221101210910)
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Summary
[edit]DescriptionFossil wood (Morrison Formation, Upper Jurassic; Escalante Petrified Forest State Park, Utah, USA) 1.jpg |
English: Fossil wood in the Jurassic of Utah, USA.
This fossil tree trunk is in the Morrison Formation, an Upper Jurassic succession that is widely distributed in many western American states. The Morrison consists of fluvial (river/floodplain) and lacustrine (lake) deposits, plus reddish-colored paleosol horizons. Dinosaur bones and dinosaur tracks are moderately common in Morrison Formation sediments. Exceptionally dinosaur-rich localities include Como Bluff in Wyoming, Dinosaur National Monument in Utah, Dinosaur Ridge in Colorado, and the Cleveland-Lloyd Quarry in Utah. This type of fossil wood is usually referred to as "petrified wood". It's a preservation style actually called "permineralization" - the small-scale porosity of buried wood or bone gets filled with minerals as groundwater percolates through. The most common permineralization mineral is quartz (SiO2). Cellular-level details can be preserved in permineralized wood, but some examples have little original botanical structure remaining. Stratigraphy: Brushy Basin Member, Morrison Formation, Upper Jurassic Locality: trailside, Escalante Petrified Forest State Park, Utah, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/50153056996/ |
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@N05/50153056996. It was reviewed on 1 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
1 November 2022
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current | 21:09, 1 November 2022 | ![]() | 3,008 × 2,000 (4.93 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50153056996/ with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D70s |
Exposure time | 1/320 sec (0.003125) |
F-number | f/8 |
ISO speed rating | 200 |
Date and time of data generation | 12:50, 2 September 2011 |
Lens focal length | 29 mm |
Width | 3,008 px |
Height | 2,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 19:36, 25 July 2020 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 12:50, 2 September 2011 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 8.321928 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 90 |
DateTimeOriginal subseconds | 90 |
DateTimeDigitized subseconds | 90 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 43 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 200638ad |
Lens used | 18.0-200.0 mm f/3.5-5.6 |
Date metadata was last modified | 15:36, 25 July 2020 |
Unique ID of original document | A61248941C167D6AB483CFA9359AC7F5 |