The Pentlands are a series of hills just south of Edinburgh. They consist of volcanic and sedimentary rocks of Devonian and Silurian age. The sediments are both terrestrial and marine, with the oldest being the marine Silurian. These Silurian rocks are the most interesting feature, forming three inliers or "windows". One of these inliers, the North Esk Inlier, is very interesting both geologically and palaeontologically.
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GeologyRocks