File:Paleoproterozoic stromatolites Franceville.jpg
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[edit]DescriptionPaleoproterozoic stromatolites Franceville.jpg |
Français : Etage : Fc, Francevillien, Paléoprotérozoïque, Protérozoïque.
Localité : Bassin de Franceville, Gabon, Afrique Centrale. La section verticale naturelle de ces stromatolites montre des colonnes et pseudo colonnes anastomosées recouvertes par des lamines planes. Ce bon échantillon figure dans la publication qui, en 1994, a décrit pour la première fois les stromatolites du bassin de Franceville ( Microfossiliferous cherty stromatolites in the 2000 Ma Franceville Group, Gabon ).English: Stage : Fc, Francevillian, Paleoproterozoic, Proterozoic.
Locality : Franceville Basin, Gabon, Central Africa. The natural vertical section of these stromatolites shows columns and pseudo-columns capped by flat laminae. This good sample appears in the publication that first described the Paleoproterozoic stromatolites from the Franceville Basin ( Microfossiliferous cherty stromatolites in the 2000 Ma Franceville Group, Gabon ). |
Date | |
Source | Own work |
Author | Benoit Potin |
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current | 15:56, 30 August 2020 | 4,000 × 3,000 (6.31 MB) | Benoit Potin (talk | contribs) | Uploaded own work with UploadWizard |
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Camera manufacturer | NIKON |
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Camera model | COOLPIX P7700 |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2 |
ISO speed rating | 250 |
Date and time of data generation | Unknown date |
Lens focal length | 6 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 2.0 |
File change date and time | 12:12, 30 August 2020 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | Unknown date |
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Image compression mode | 4 |
APEX exposure bias | −0.7 |
Maximum land aperture | 2 APEX (f/2) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
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 | 0 |
Focal length in 35 mm film | 28 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS date | 0000:00:00 |
GPS tag version | 0.0.3.2 |
IIM version | 2 |