Map record details
| Map series | Geological Survey of England and Wales 1:63,360/1:50,000 geological map series, New Series |
|---|---|
| Sheet number | 231 |
| Sheet title | Merthyr Tydfil. |
| Map type | Drift |
| Scale | 1:63 360 |
| Publication year | 1967 |
| 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 sheets 42 & 36 Old Series. Resurveyed on the six-inch scale by A. Strahan, M.A. (West central part), W. Gibson (S. part) and T.C. Cantrill, B.Sc. (N part). Published with Drift in Feby. 1900. Revisions on the western margin 1902. J.J.H. Teall, F.R.S. Director. |
| Published statement | Published with Drift 1900. Revised Solid on west margin 1902. Further revisions to 1920. Reprinted 1957. Reprinted (2nd impression) 1967. Print code: 1000/67. |
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