Image:Ordovicium-Silurian.jpg

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Size of this preview: 640 × 429 pixels
Full resolution‎ (700 × 469 pixels, file size: 357 KB, MIME type: image/jpeg)

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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.
Source	self-made
Date	Summer 2007
Author	Petter Bøckman
Permission ( Reusing this image)	see below

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:

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".

Copyleft: This work of art is free; you can redistribute it and/or modify it according to terms of the Free Art License.
You will find a specimen of this license on the site Copyleft Attitude http://artlibre.org/licence/lal/en/ as well as on other sites.

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File history

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	Date/Time	Dimensions	User	Comment
current	08:46, 28 November 2007	700×469 (357 KB)	Petter Bøckman	({{Information \|Description= \|Source=self-made \|Date=Summer 2007 \|Author= Petter Bøckman \|Permission= \|other_versions= }} Category: Geology )

File links

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Silurian

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
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	2
Exposure Program	Not defined
ISO speed rating	100
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
Metering mode	Pattern
Light source	Unknown
Flash	0
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
Scene capture type	Standard
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Subject distance range	Unknown

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