File:Tourmaline-feldspar-quartz,_Erongo_Granite_Namibia.jpg
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Summary
DescriptionTourmaline-feldspar-quartz, Erongo Granite Namibia.jpg |
Tourmaline-feldspar-quartz from the Cretaceous of Namibia. (~2.45 cm across at its widest) Black = schorl tourmaline Light-colored material - microcline feldspar and quartz This is a schorl tourmaline-rich sample from the Erongo Granite of Namibia. The Erongo Granite is a subvolcanic ring dike granite. It represents magma that cooled underneath an ancient, now-deeply eroded volcano. Geologic unit: Erongo Granite, Erongo Complex (Erongo Volcanic Complex), Damara Orogenic Zone (Damara Belt), ~earliest Cretaceous, 144 Ma Locality: unrecorded site at Lions Head (= southern Erongo Complex), 30 to 40 km northwest of the town of Karibib, Erongo Mountains, Karibib District, Erongo Region, northwest-central Namibia |
Date | |
Source | Tourmaline-feldspar-quartz (Erongo Granite, Early Cretaceous, 144 Ma; Lions Head, Erongo Mountains, Namibia) 2 |
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@N05/25987991522. It was reviewed on 13 April 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
13 April 2016
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27 March 2016
0.01666666666666666666 second
8.295 millimetre
image/jpeg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:51, 13 April 2016 | ![]() | 1,747 × 1,515 (1.14 MB) | Tillman | Transferred from Flickr via Flickr2Commons |
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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/9 |
ISO speed rating | 80 |
Date and time of data generation | 20:40, 27 March 2016 |
Lens focal length | 8.295 mm |
Image title | |
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 13.0 (Macintosh) |
File change date and time | 20:44, 27 March 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 20:40, 27 March 2016 |
Meaning of each component |
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Image compression mode | 3 |
Shutter speed | 5.90625 |
APEX aperture | 6.34375 |
Exposure bias | −1.6666666666667 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
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 |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 14:44, 27 March 2016 |
Unique ID of original document | 223929AB99227799D955E1C8888B5561 |
IIM version | 24,576 |