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File:Ordovicium-Silurian.jpg

Summary

Description Photo of the Ordovician - Silurian boundary, an example of marine transgression as exposed on the Southern tip of the Hovedøya island, Norway. Due to the folding of the caledonian mountain range, the layers have been inverted, leaving Ordovician granular limestone on top of the later Silurian brownish mudstone.
Date Summer 2007
Source Own work
Author Petter Bøckman

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
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This licensing tag was added to this file as part of the GFDL licensing update.
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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer NIKON CORPORATION
Camera model NIKON D80
Exposure time 1/200 sec (0.005)
F-number f/7.1
ISO speed rating 100
Date and time of data generation 12:19, 21 August 2007
Lens focal length 18 mm
Orientation Normal
Horizontal resolution 300 dpi
Vertical resolution 300 dpi
Software used Adobe Photoshop CS Windows
File change date and time 09:36, 28 November 2007
Y and C positioning Co-sited
Exposure Program Not defined
Exif version 2.21
Date and time of digitizing 12:19, 21 August 2007
Image compression mode 1
Exposure bias 0
Maximum land aperture 3.6 APEX (f/3.48)
Metering mode Pattern
Light source Unknown
Flash Flash did not fire
DateTime subseconds 10
DateTimeOriginal subseconds 10
DateTimeDigitized subseconds 10
Colour space sRGB
Sensing method One-chip colour area sensor
Custom image processing Normal process
Exposure mode Auto exposure
White balance Auto white balance
Digital zoom ratio 1
Focal length in 35 mm film 27 mm
Scene capture type Standard
Contrast Normal
Saturation Normal
Sharpness Normal
Subject distance range Unknown

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