File:Mylonite (phyllonite) (Rector Branch Mylonite Zone; western Madison County, North Carolina, USA) 1.jpg
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Summary
[edit]DescriptionMylonite (phyllonite) (Rector Branch Mylonite Zone; western Madison County, North Carolina, USA) 1.jpg |
English: Mylonite (phyllonite) from the Late Paleozoic of North Carolina, USA. (foliation plane view; ~18.4 centimeters across at its widest)
Mylonite is a shear metamorphic rock. It forms by intense ductile deformation of rocks in & along fault zones deep in the crust. Several varieties of mylonite have been described in the geologic literature. The example shown above is called phyllonite, which is a mica-rich mylonite with a phyllite-like appearance (www.flickr.com/photos/jsjgeology/16921500082). Phyllonites form by mylonitization of a more coarsely-crystalline precursor rock. Structural unit & age: Rector Branch Mylonite Zone along the Rector Branch Thrust Fault (Precambrian-aged Spring Creek Gneiss overlying Cambrian-aged Snowbird Formation metasedimentary rocks), southwest of the Hot Springs Window; faulting and mylonitization very likely occurred during the Pennsylvanian-aged Allegheny Orogeny. Locality: unrecorded site in western Madison County (apparently south or southeast or east of the town of Bluff), western North Carolina, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/26210345091/ |
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@N05/26210345091. It was reviewed on 18 January 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
18 January 2022
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:49, 18 January 2022 | 2,744 × 2,616 (3.75 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/26210345091/ 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 | 1/60 sec (0.016666666666667) |
F-number | f/8 |
ISO speed rating | 250 |
Date and time of data generation | 14:42, 6 April 2016 |
Lens focal length | 6.2 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 14:49, 6 April 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 14:42, 6 April 2016 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
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 |
Supported Flashpix version | 1 |
Image width | 2,744 px |
Image height | 2,616 px |
Date metadata was last modified | 10:49, 6 April 2016 |
IIM version | 2 |