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Swaledale Geology  Pages © John Russell
SWAAG Honorary President:
Tim Laurie FSA
UK Geology Map

Geological Map of Great Britain

white = Quaternary (alluvium);
beige = Palaeogene rocks;
lime green = Cretaceous;
blue/green = Lower Cretaceous;
light blue = middle/upper Jurassic;
mid blue = lower Jurassic;
dark purple = upper Triassic;
light purple = lower Triassic;
light orange = upper Permian;
brick orange = lower Permian;
light blue = upper Carboniferous (Coal Measures);
mid blue = middle Carboniferous;
muddy blue = lower Carboniferous (limestone);
dull orange & brown = Devonian;
light blue = Silurian;
slate blue = Ordovician;
dark slate blue = Cambrian;
mid orange = Neoproterozoic (Dalradian);
dark green = Neoproterozoic (Torridonian);
pink = Lewisian;
bright red =granitee;
dull red = Palaeogene volcanics
Yorkshire Geology

See also this SWAAG Database Record