Media in category "Ordovician volcanism"

The following 20 files are in this category, out of 20 total.

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  Ancient Pillow lavas - geograph.org.uk - 1156212.jpg 640 × 480; 123 KB
  
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  Beach at Carreg y Defaid - geograph.org.uk - 2934817.jpg 640 × 480; 111 KB
  
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  Castell Deganwy Castle - geograph.org.uk - 221851.jpg 600 × 427; 123 KB
  
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  Dolerite Columnar Basalt at Pen Anglas - geograph.org.uk - 1510905.jpg 640 × 480; 86 KB
  
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  Fiamme in Ignimbrite at Side Pike in Cumbria.jpg 640 × 480; 90 KB
  
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  Field wall with outcrop - geograph.org.uk - 1358071.jpg 640 × 480; 87 KB
  
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  Flow banded rhyolite.JPG 3,456 × 2,304; 4.82 MB
  
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  Génis porphyroid.jpg 3,264 × 2,448; 4.02 MB
  
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  Ice-scoured outcrops - geograph.org.uk - 1373529.jpg 640 × 480; 95 KB
  
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  Ignimbrite of Thirlmere Tuff M.JPG 1,024 × 773; 465 KB
  
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  OrdovicianSilurianFossils.jpg 3,072 × 2,304; 2.66 MB
  
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  Outcrops of basaltic trachyandesites on Moelypenmaen - geograph.org.uk - 677819.jpg 640 × 437; 70 KB
  
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  Pillow Lava at Crozon Brittany France.jpg 1,600 × 1,067; 1.2 MB
  
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  Ramsey Island, basalt rock formation near Porth Lleuog - geograph.org.uk - 913661.jpg 600 × 450; 184 KB
  
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  Rock - Helvellyn Tuff Formation.JPG 1,600 × 1,200; 973 KB
  
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  Rutan Hill.jpg 3,072 × 2,304; 3.29 MB
  
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  Sheepfold - geograph.org.uk - 512059.jpg 600 × 450; 83 KB
  
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  Tal y Fan Volcanic Formation - geograph.org.uk - 1358089.jpg 640 × 480; 79 KB
  
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  Upper Rhyolitic Tuff Formation - geograph.org.uk - 1373619.jpg 480 × 640; 95 KB
  
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  Weathered Tuff at Raguenez France.jpg 2,048 × 1,536; 947 KB