File:Rock salt (Arapien Formation, Middle Jurassic; Redmond Salt Mine, near Redmond, Utah, USA) 1.jpg
![File:Rock salt (Arapien Formation, Middle Jurassic; Redmond Salt Mine, near Redmond, Utah, USA) 1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Rock_salt_%28Arapien_Formation%2C_Middle_Jurassic%3B_Redmond_Salt_Mine%2C_near_Redmond%2C_Utah%2C_USA%29_1.jpg/623px-Rock_salt_%28Arapien_Formation%2C_Middle_Jurassic%3B_Redmond_Salt_Mine%2C_near_Redmond%2C_Utah%2C_USA%29_1.jpg?20221114054057)
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[edit]DescriptionRock salt (Arapien Formation, Middle Jurassic; Redmond Salt Mine, near Redmond, Utah, USA) 1.jpg |
English: Rock salt (sedimentary halitite) from the Jurassic of Utah, USA. (~9.0 centimeters across at its widest)
Rock salt is a chemical sedimentary rock that forms by the evaporation of water (usually seawater) and the precipitation of dissolved minerals. Chemical sedimentary rocks that form by the evaporation of water are called evaporites. Rock salt and rock gypsum are the two most common evaporites. Rock salt is composed of the mineral halite (NaCl - sodium chloride). It ranges in color from clearish to grayish to orangish-brown, but sometimes has other colors, such as blue and pinkish-orange. It has a strongly salty taste, is often coarsely-crystalline, and is relatively soft (H = 2.5). Rock salt is also known as halitite, which refers to sedimentary evaporite deposits composed of halite. "Halitite" has also been used in the geologic literature to refer specifically to rock salt that's been contact metamorphosed by igneous intrusions. This rock salt sample is from central Utah's Arapien Formation, a Jurassic-aged unit that contains evaporites. Salt bodies often "bloop" upward with burial because they are low density and non-compressible - such structures are called salt domes, or salt diapirs. Diapirism in the area has resulted in structural tilting of overlying sedimentary layers (e.g., the Twist Gulch Formation in Salina Canyon - see: www.flickr.com/photos/jsjgeology/49919706303). Stratigraphy: Arapien Formation, Middle Jurassic Locality: Redmond Salt Mine, near the town of Redmond, central Utah, USA |
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Source | https://www.flickr.com/photos/47445767@N05/50560663373/ |
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@N05/50560663373. It was reviewed on 15 November 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
15 November 2022
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current | 05:40, 14 November 2022 | ![]() | 2,784 × 2,680 (5.79 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50560663373/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/9 |
ISO speed rating | 80 |
Date and time of data generation | 18:17, 2 November 2020 |
Lens focal length | 8.295 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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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 | 19:31, 2 November 2020 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 18:17, 2 November 2020 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.34375 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction 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 | 14:31, 2 November 2020 |
Unique ID of original document | 55C398269D3BFB515555A5E661F13A84 |
IIM version | 32,767 |