Map record details

Map series Geological Survey of England and Wales 1:63,360/1:50,000 geological map series, New Series 
Sheet number 164 
Sheet title Llanidloes. 
Map type Bedrock and Superficial 
Scale 1:50 000 
Publication year 2010 
Author statement Original geological survey at 1:63 360 scale by W.T. Aveline, H.W. Bristow, A.C. Ramsay and A.R. Selwyn. Published as parts of Old Series sheets 56, 57, 59 and 60 in 1848 and 1850. Central Wales Mining Field surveyed at 1:10 560 scale by O.T. Jones (University of Wales) in 1917-18, and part resurveyed by D. Williams in 1940. Small areas along the western and eastern margins of the sheet surveyed at 1:10 560 scale by R. Cave between 1965 and 1972. Southern margin surveyed at 1:10 000 scale by R. Cave, J. R. Davies, C.J.N. Fletcher, A.J Reedman and R.A. Waters between1986 and 1989. Resurveyed at 1:20 000 scale by J.A. Aspden, C.E. Burt, J.R. Davies, M. Hall, N.S. Jones, A.B. Leslie, T.H. Sheppard, P.R. Wilby and D. Wilson in 2006 utilising previously published and unpublished data. Biostratigraphy by S.P. Tunnicliff, A. Snelling, D.E. White and J.A. Zalasiewicz. J.R. Davies, Chief Geologist Wales. 
Published statement Published 2010. Print code: 2000/2007. 
View map View map 1 | Buy direct from BGS Bookshop | Request a paper map or scanned copy 1 View map 2 | Buy direct from BGS Bookshop | Request a paper map or scanned copy 2

These maps are the same edition. Where more than one map is available different copies of the same published map have been scanned.

Terms of use

Geological data associated with this map as displayed in this viewer is made available under the Open Government Licence, subject to the following acknowledgement accompanying any reproduced BGS materials: "Contains British Geological Survey materials © UKRI [year]".

Maps include topographical data. Use of this data is subject to terms and conditions:

  1. You are granted a non-exclusive, royalty free revocable licence solely to view the licensed data for non-commercial purposes for the period during which the British Geological Survey makes it available;
  2. You are not permitted to copy, sub-license, distribute, sell or otherwise make available the Licensed Data to third parties in any form; and
  3. Third party rights to enforce the terms of this licence shall be reserved to Ordnance Survey.

© Crown copyright and database rights 2010 Ordnance Survey 100021290.

Please be aware that separate terms will be supplied with digital or hard copy versions of the map purchased via the BGS Bookshop.

Hutton field: well correlation diagram.
Small scale (non-series) maps
Hydrogeology
Small scale (non-series) maps