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Geological Survey of England and Wales, Horizontal sections
Horizontal sections were the first attempt by the Survey to indicate 'the arrangement of rocks beneath the surface'. Undertaken on the scale of six inches to the mile they were issued with a small explanatory pamphlet. Maps were issued 1844-1894.
1844 – 18941:10 5606 inch : 1 mileEnglandCymru (Wales)
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