Map record details
Map series | Geological Survey of England and Wales 1:63,360/1:50,000 geological map series, New Series |
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Sheet number | 231 |
Sheet title | Merthyr Tydfil. |
Map type | Solid |
Scale | 1:50 000 |
Publication year | 1979 |
Author statement | Original geological survey on the one-inch scale by Sir H.T. De la Beche, Director General, Sir W.E. Logan and D.H. Williams. Published on Old Series Sheets 36 and 42 (before 1844). Surveyed on the six-inch scale by A. Strahan, W. Gibson and T.C. Cantrill in 1895-98. Published with Drift in 1900. Resuryeyed on the six-inch scale by K. Taylor, L.P. Thomas, G.W. Green, H.C. Squirrell and I.H.S. Hall in 1966-72. J.R. Earp, District Geologist. |
Published statement | 2nd colour edtion. Published (in Solid and Drift editions) 1979. Print code: 3000/79. |
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