File:Skarn (Russia) 2.jpg
![File:Skarn (Russia) 2.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Skarn_%28Russia%29_2.jpg/800px-Skarn_%28Russia%29_2.jpg?20200302125320)
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Summary
[edit]DescriptionSkarn (Russia) 2.jpg |
English: Skarn from Russia. (public display, Dakota Dinosaur Museum, Dickinson, North Dakota, USA)
Skarn is a contact metamorphic rock with a crystalline texture. It forms by heating and addition of elements (metasomatism) to country rock in the immediate vicinity of an igneous intrusion (batholith, stock, sill, dike, laccolith). The mineralogy of skarns is highly variable, depending on the chemistries of the host rock and the intruding magma. I have not located any geologic information on this type of Russian skarn. I'm not sure the rock is even identified correctly by the museum. Its appearance is that of a travertine sample. Confirmatory or contradictory comments are welcome. From exhibit signage: A thermally metamorphosed impure limestone. This stone was selected for extensive use in Moscow's subway stations. |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/49601277768/ |
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@N05/49601277768 (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 | 12:53, 2 March 2020 | ![]() | 2,676 × 1,595 (3.77 MB) | Ser Amantio di Nicolao (talk | contribs) | User created page with UploadWizard |
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Date and time of data generation | 16:49, 27 August 2008 |
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Bits per component |
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Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 16.0 (Macintosh) |
File change date and time | 21:50, 29 November 2019 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 16:49, 27 August 2008 |
Meaning of each component |
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File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
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White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 300 mm |
Scene capture type | Standard |
Scene control | Low gain up |
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Date metadata was last modified | 16:50, 29 November 2019 |
Unique ID of original document | 6AD9C6267AA8B4800D792C2DFD740436 |