File:Amphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA).jpg
Original file (3,136 × 2,651 pixels, file size: 6.8 MB, MIME type: image/jpeg)
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Summary
[edit]DescriptionAmphibolite (Chunky Gal Complex, Ordovician, ~458 Ma; Chunky Gal Mountain, Blue Ridge, North Carolina, USA).jpg |
English: Amphibolite from the Ordovician of North Carolina, USA.
Amphibolite is a dark-colored metamorphic rock dominated by amphibole. It is usually weakly foliated but can be crystalline-textured. Amphibolites are principally composed of hornblende amphibole and plagioclase feldspar. Many amphibolites form by metamorphism of basalt or gabbro (= mafic igneous rocks). The rock seen here is from North Carolina's Chunky Gal Complex and has two types of amphibole, colored blackish and greenish. Rubies (red corundum) can occur in these rocks, but none are present here. This material is metamorphosed Proterozoic oceanic crust. Regional metamorphism occurred in the Ordovician, during the Taconic Orogeny, at about 458 million years ago. Geologic unit: metagabbro from the Chunky Gal Complex (Chunky Gal Mountain Mafic-Ultramafic Complex), ~458 Ma metamorphic age Locality: unrecorded/undisclosed site on Chunky Gal Mountain, southeastern Clay County, Blue Ridge, far-western North Carolina, USA |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/53340415916/ |
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@N05/53340415916. It was reviewed on 28 November 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
28 November 2023
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:07, 28 November 2023 | 3,136 × 2,651 (6.8 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53340415916/ with UploadWizard |
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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/10 |
ISO speed rating | 80 |
Date and time of data generation | 00:12, 10 November 2023 |
Lens focal length | 9.681 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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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 20.0 (Macintosh) |
File change date and time | 23:51, 9 November 2023 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 00:12, 10 November 2023 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.65625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 3.625 APEX (f/3.51) |
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 | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 18:51, 9 November 2023 |
Unique ID of original document | 2845B604BAB6B22D2CCBDE5ED9F8BDA2 |