File:Mudcracks 1.jpg
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Summary
[edit]DescriptionMudcracks 1.jpg |
English: Modern mudcracks (public display, Sternberg Museum of Natural History, Hays, Kansas, USA)
Mudcracks are diagnostic sedimentary structures indicating subaerial exposure of sediment surfaces, with alternating wet & dry conditions. They are much more common that raindrop imprints, which indicate the same environmental setting. Mudcracks are most likely to occur in fine-grained siliciclastic sediments, fine-grained carbonate sediments, and in some evaporitic settings. Mudcracks are distinctive and easy to identify, but they do vary in appearance. The cracks themselves vary in width, depth, and areal density. Mudcrack polygons also vary in size & shape. |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/30156286662/ |
Author | James St. John |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/30156286662 (archive). It was reviewed on 2 March 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
2 March 2020
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current | 22:41, 2 March 2020 | 3,536 × 2,312 (4.05 MB) | Ser Amantio di Nicolao (talk | contribs) | User created page with UploadWizard |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/15 sec (0.066666666666667) |
F-number | f/4.9 |
ISO speed rating | 320 |
Date and time of data generation | 10:48, 13 June 2012 |
Lens focal length | 18.6 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 23:20, 11 October 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 10:48, 13 June 2012 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 3.90625 |
APEX aperture | 4.59375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4.59375 APEX (f/4.91) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
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 | Standard |
Supported Flashpix version | 1 |
Image width | 3,536 px |
Image height | 2,312 px |
Date metadata was last modified | 19:20, 11 October 2016 |
IIM version | 2 |