File:Folded gyprock.jpg
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[edit]DescriptionFolded gyprock.jpg |
English: Folded gyprock (Castile Formation, Upper Permian; State Line outcrop, southern Eddy County, New Mexico, USA) 7
Folded gyprock in the Permian of New Mexico, USA. This is the famous (& former) State Line outcrop, along Rt. 180/Rt. 62 at the New Mexico-Texas border. The cut contains finely-laminated gyprock (rock gypsum), a finely crystalline-textured, chemical sedimentary rock composed of the mineral gypsum (CaSO4·2H2O - hydrous calcium sulfate). Gyprock is an evaporite, which forms by the evaporation of water (usually seawater) and the precipitation of dissolved minerals. The whitish layers are gypsum. The dark brown layers are calcite. Each gypsum-calcite couplet represents one year's worth of deposition. These layers could be called varves. The calcite-gypsum (or -anhydrite) couplets have been successfully correlated throughout the Delaware Basin. Spectacular crinkling, small-scale folding, and small-scale faulting are present here. The folds and faults formed as a result of early Cenozoic structural deformation, not gypsum-to-anhydrite (or vice-versa) transformations (see Anderson & Kirkland, 1987). This world-class outcrop was destroyed in the late 2000s by the highway department to convert the two-lane highway into a four-lane divided highway. Stratigraphy: Castile Formation, upper Upper Permian Locality: State Line outcrop, roadcut on either side of Rt. 180/Rt. 62, between Carlsbad Caverns National Park and Guadalupe Mountains National Park, immediately north of the Texas border, southern Eddy County, southeastern New Mexico, USA (32° 00' 34.2" North latitude, 104° 29' 55.0" West longitude) Reference cited: Anderson, R.Y. & D.W. Kirkland. 1987. Banded Castile evaporites, Delaware Basin, New Mexico. Rocky Mountain Section of the Geological Society of America, Centennial Field Guide Volume 2: 455-458. |
Date | |
Source | https://www.flickr.com/photos/jsjgeology/8280544003 |
Author | James St. John |
Licensing
[edit]This image, originally posted to Flickr, was reviewed on 2 March 2019 by the administrator or reviewer Leoboudv, who confirmed that it was available on Flickr under the stated license on that date. |
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current | 00:52, 1 March 2019 | 1,536 × 859 (949 KB) | RockingGeo (talk | contribs) | User created page with UploadWizard |
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- Structural geology
- Horst and graben
- Fold (geology)
- Syncline
- Allochthon
- Rheid
- Water gap
- Creepmeter
- Stockwork
- Flow banding
- Klippe
- Shutter ridge
- Lead (geology)
- Whittier Fault
- Lambert Graben
- Southern Alps (Europe)
- Dent Blanche nappe
- Hohe Tauern window
- Sesia zone
- Window (geology)
- Fissility (geology)
- Porphyroclast
- Compression (geology)
- Tectonite
- White Wolf Fault
- Pressure solution
- Champlain Thrust
- Striation (geology)
- En echelon veins
- Tectonic phase
- Mica fish
- Pressure ridge
- Tintina Fault
- Deformation bands
- Rake (geology)
- Foundered strata
- Tamayo Fault
- Disturbance (geology)
- Tetapaga Syncline
- Big Dan Shear Zone
- Pothole (geology)
- Flatiron (geomorphology)
- Usk Inlier
- Pennine Basin
- Link Lake Deformation Zone
- Northeast Arm Deformation Zone
- Tasse Lake Deformation Zone
- Net Lake-Vermilion Lake Deformation Zone
- Competence (geology)
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Width | 1,536 px |
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Height | 859 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 200 dpi |
Vertical resolution | 200 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 00:50, 3 December 2017 |
Exif version | 2.21 |
Color space | sRGB |
Unique ID of original document | 3B0B4094BA77032473FD6238F99AC391 |
Date and time of digitizing | 18:14, 15 September 2017 |
Date metadata was last modified | 19:50, 2 December 2017 |