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Coppermines Valley
Borrowdale Volcanic Group)
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The Ordovician Skiddaw Slates in the northern part of the Lake District
consist mainly of low grade metamorphosed mudstones, siltstones and
greywackes, except where thermally metamorphosed by igneous intrusions, e.g.
the Skiddaw Granite.
They are therefore generally softer than the Borrowdale
Volcanics and tend to give the landscape a less
craggy more rounded appearance as the two photos of Blencathra
and Glenderaterra show.
In contrast, the scenery in many parts of the central Lake District is
much more craggy with steep valley sides due to the
more resistant andesite lavas and tuffs of the Borrowdale
Volcanics. The southern part of the Lake District
consists mainly of Silurian mudstones and siltstones, again giving the
landscape a much gentler lower lying rolling landscape.
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