Map record details

Map series Geological Survey of England and Wales 1:63,360/1:50,000 geological map series, New Series 
Sheet number 178 
Sheet title Llanilar. 
Map type Solid and Drift 
Scale 1:50 000 
Publication year 1994 
Author statement Original geological survey on the one-inch scale, published on Old Series Sheet 57 in 1848. Surveyed on the 1:10 000 scale as part of the Central Wales Rapid Mapping Project by J.R. Davies, C.J.N. Fletcher, R.A. Waters, D. Wilson, D.G. Woodhall and J.A. Zalasiewicz with small areas by R. Cave and B.A. Hains, 1970-1990. Biostratigraphy mainly by J.A. Zalasiewicz, with H.F. Barron, S.P. Tunnicliff and D.E. White. Geophysics by R.M. Carruthers and R.B. Evans. Crystallinity indices by R.J. Merriman, B. Roberts, and S. Hirons (Birkbeck College, University of London). R.A.B. Bazley, Regional Geologist. 
Published statement Published 1994. Print code: 94/1800. 
View map View map | Buy direct from BGS Bookshop | Request a paper map or scanned copy

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 1994 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.