File:Highly convoluted gneiss (Archean; Norris South roadcut, Madison County, Montana, USA) 1 (45479834782).jpg
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Summary
[edit]DescriptionHighly convoluted gneiss (Archean; Norris South roadcut, Madison County, Montana, USA) 1 (45479834782).jpg |
Gneiss in the Precambrian of Montana, USA. Gneiss is a high-grade, foliated metamorphic rock. It forms principally by metamorphism of schist, granite, or granite-like rocks. The foliation in gneiss is obvious and consists of alternating bands of light and dark minerals. Geologic unit & age: unit Agg of Kellogg (1994) - plagioclase-microcline-quartz-biotite gneiss, Archean, probably 3.1 to 3.2 Ga (= age of peak metamorphism during intrusion of Spanish Peaks area trondhjemites and tonalites) Locality: roadcut on the eastern side of Route 287, Burnt Creek-Bradley Creek Valley, south of the town of Norris, northern Madison County, southwestern Montana, USA (45° 31' 29.67" North latitude, 111° 41' 50.54" West longitude) Reference cited: Kellogg (1994) - Geologic map of the Norris quadrangle, Madison County, Montana. United States Geological Survey Geologic Quadrangle Map GQ-1738. |
Date | |
Source | Highly convoluted gneiss (Archean; Norris South roadcut, Madison County, Montana, USA) 1 |
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@N05/45479834782 (archive). It was reviewed on 7 November 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
7 November 2018
James St. John
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current | 00:28, 7 November 2018 | ![]() | 4,000 × 3,000 (9.52 MB) | Lu Brito (talk | contribs) | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/250 sec (0.004) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 14:02, 13 August 2018 |
Lens focal length | 6.2 mm |
Image title | |
Width | 4,000 px |
Height | 3,000 px |
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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 13.0 (Macintosh) |
File change date and time | 00:09, 24 October 2018 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 14:02, 13 August 2018 |
Meaning of each component |
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APEX shutter speed | 7.96875 |
APEX aperture | 6 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
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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 |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 20:09, 23 October 2018 |
Unique ID of original document | 40CA6AE6868E99022352DC2AE2C8C0CD |
IIM version | 1 |