Silurian Cliffs

January 14, 2005

Epod-sub copy

Provided and copyright by: Kim Gowney
Summary authors & editors: Jim Foster; Kim Gowney

The photo above shows extreme folding in the sedimentary rocks of these Silurian age cliffs (443-417 million years ago). It was taken from Pembrokeshire Coast National Park, on the west coast of Wales, on April 17, 2004. These folds were formed in rock strata during the Caledonian Orogeny -- a mountain building event during the late Silurian and early Devonian Period. Pembrokeshire likely displays a greater variety of rocks and formations than any equivalent area in Britain. Within the park, there are over 250 miles (400 km) of coastal and estuarine cliff and shore exposures.

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