File:Ordovicium-Silurian.jpg

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Ordovicium-Silurian.jpg (700 × 469 pixels, file size: 357 KB, MIME type: image/jpeg)

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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 late Ordovician brownish mudstone with limestones nodules deposited in shallow water on top of the deep-water dark Silurian shale.
Date Summer 2007
date QS:P,+2007-00-00T00:00:00Z/9,P4241,Q40720564
Source Own work
Author Petter Bøckman

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I, the copyright holder of this work, hereby publish it under the following licenses:
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Date/TimeThumbnailDimensionsUserComment
current08:46, 28 November 2007Thumbnail for version as of 08:46, 28 November 2007700 × 469 (357 KB)Petter Bøckman (talk | contribs){{Information |Description= |Source=self-made |Date=Summer 2007 |Author= Petter Bøckman |Permission= |other_versions= }} Category: Geology

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