Horizontal Section No. 28 (1880). Snowdon. From Llanfair-is-gaer, Menai Straits over Dinas, Snowdon, Moel-Wyn. Geological Survey of GB. 2nd
Horizontal Section No. 28 (1880). Snowdon. From Llanfair-is-gaer, Menai Straits over the Cambrian and Silurian rocks of Dinas, Snowdon, Cynicht, Moel-Wyn. Geological Survey of GB. 2nd edition. The description in 1934 catalogue lumps 28, 29, and 30 together; only the places on this section are named in the edited title above. Located on Old Series one-inch maps 75ne & se, and 78sw &se. Uncoloured engraving 69.5 x 102cm, 1:10,560 scale (6”= 1mile). Flat. Slightly age-toned edges. Clean. In very good condition.
About England & Wales Sections
These hand-coloured engraved ‘horizontal’ sections at six inch to one mile scale were published in the mid 19th century by the Geological Survey of England and Wales. The detailed profiles generally follow the geological dip on the one inch Old Series maps numbered in the upper right hand margin and the profile locations are shown on these maps which themselves did not include a section.