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File:Tal y Fan Volcanic Formation - geograph.org.uk - 1358089.jpg

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English: Tal y Fan Volcanic Formation - Tuff rock formation in Wales.
  • Tumbled boulders are the remains of frost-shattered outcrops of the Ordovician Tal y Fan Volcanic Formation, which is a deposit formed by submarine, basaltic volcanic vents on the edge of the wider Snowdon volcanic district.
  • Fine beds of ash or tuff are interspersed with much coarser debris in the form of basaltic breccia. A bed of this breccia forms the outcrop immediately above the dog in the image, where the coarser texture is clearly visible and contrasts with much smoother surfaces elsewhere.
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Source From geograph.org.uk
Author Jonathan Wilkins
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Jonathan Wilkins / Tal y Fan Volcanic Formation / 
CC BY-SA 2.0
Jonathan Wilkins / Tal y Fan Volcanic Formation
Camera location53° 14′ 12″ N, 3° 53′ 18″ W  Heading=45° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo
Object location53° 14′ 12″ N, 3° 53′ 18″ W  Heading=45° Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: Jonathan Wilkins
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current09:01, 28 February 2011Thumbnail for version as of 09:01, 28 February 2011640 × 480 (79 KB)GeographBot (talk | contribs)== {{int:filedesc}} == {{Information |description={{en|1=Tal y Fan Volcanic Formation Tumbled boulders are the remains of frost-shattered outcrops of the Ordovician Tal y Fan Volcanic Formation, which is a deposit formed by submarine, basaltic volcanic ve

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