File:Granite Dells, North of Prescott, Arizona (101308458).jpg
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Summary
[edit]DescriptionGranite Dells, North of Prescott, Arizona (101308458).jpg |
The Granite Dells is a geological feature north of Prescott, Arizona. The Dells consist of exposed bedrock and large boulders of granite that have eroded into an unusual lumpy, rippled appearance. Watson Lake and Willow Lake are small man-made reservoirs in this formation. The Peavine National Recreation Trail follows the former railbed of the Santa Fe, Prescott & Phoenix Railway through the Granite Dells. This winding portion of the railroad was known as the "Peavine" because its twisting curves resembled that of a pea vine. It connects to the Iron King Trail, which follows the route of the old Prescott & Eastern Railroad through the eastern Granite Dells. Both are rail trail conversions. The precambrian Dells' granite has been dated at 1.4 billion years old. Its pluton was intruded at a depth of around one or two miles (1.6 to 3.2 km). These cover rocks have since been eroded away. Weathering along joints produced the rounded boulders and other unusual rock formations that characterize the Granite Dells. This process is called spheroidal weathering, and is common in granitic terrains. The Dells' granite has an unusually high uranium content, and thus homes built over the granite should be checked for radon leaking from the granite. en.wikipedia.org/wiki/Granite_Dells en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_... |
Date | |
Source | Granite Dells, North of Prescott, Arizona |
Author | Ken Lund from Reno, Nevada, USA |
Camera location | 34° 36′ 02.07″ N, 112° 25′ 30.56″ W | View this and other nearby images on: OpenStreetMap | 34.600574; -112.425155 |
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Licensing
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This image was originally posted to Flickr by Ken Lund at https://flickr.com/photos/75683070@N00/101308458. It was reviewed on 3 December 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
3 December 2015
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current | 21:40, 3 December 2015 | 1,600 × 1,200 (1.55 MB) | INeverCry (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Metadata
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A70 |
Exposure time | 1/500 sec (0.002) |
F-number | f/5.6 |
Date and time of data generation | 08:08, 2 February 2006 |
Lens focal length | 11.3 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 08:08, 2 February 2006 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 08:08, 2 February 2006 |
Meaning of each component |
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APEX shutter speed | 8.9686668031948 |
APEX aperture | 4.9708536585366 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 7,692.3076923077 |
Focal plane Y resolution | 7,692.3076923077 |
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 | Landscape |