File:Differential weathered-differential eroded igneous rock having intersecting granite dikes.jpg
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Summary
[edit]DescriptionDifferential weathered-differential eroded igneous rock having intersecting granite dikes.jpg |
English: Differential weathering and differential erosion on a dark-colored igneous rock having light-colored granite dikes. (public display, Field Museum of Natural History, Chicago, Illinois, USA)
Differential weathering and differential erosion are often (jokingly) the default explanations for odd-looking rocks or unusual geologic scenery (e.g., Arches National Park & Fantasy Canyon in Utah). But they are important, real-life processes. Differential weathering and differential erosion refer to hard, resistant rocks & minerals weathering and eroding slowly and softer, less-resistant rocks & minerals eroding quickly. The rock seen here is an intrusive igneous rock (gabbro?) with two intersecting, pinkish-colored granite dikes. The dikes noticeably project from the rock surface. The dark host rock has weathered & eroded at a faster rate than the granite dikes. |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/14973078207/ |
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@N05/14973078207. It was reviewed on 22 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
22 October 2020
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current | 18:35, 22 October 2020 | 2,892 × 1,891 (3.1 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/14973078207/ with UploadWizard |
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Metadata
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D70s |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/5.3 |
Date and time of data generation | 10:15, 11 June 2010 |
Lens focal length | 95 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS2 Macintosh |
File change date and time | 16:19, 6 September 2014 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 10:15, 11 June 2010 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 4.8 APEX (f/5.28) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash fired, strobe return light detected, auto mode |
DateTime subseconds | 70 |
DateTimeOriginal subseconds | 70 |
DateTimeDigitized subseconds | 70 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 142 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Supported Flashpix version | 1 |
Image width | 2,892 px |
Image height | 1,891 px |
Date metadata was last modified | 12:19, 6 September 2014 |