Ordovician ash-flow tuffs in eastern Snowdonia
By: [by] M. F. Howells, B. E. Leveridge and C. D. R. Evans.
Contributors: Leveridge, B. E., joint author.; Evans, C. D. R., joint author.
Series: Institute of Geological Sciences. Report no. 73/3; Report (Institute of Geological Sciences (Great Britain)) ;; 73/3.
Publisher: H.M.S.O.
Published: 1973
Place of publication: London
Language: eng
Number of pages: 33
Subjects: Volcanic ash, tuff, etc. -- Wales -- Snowdonia.; Volcanism -- Wales -- Snowdonia.; Geology, Stratigraphic -- Ordovician.
Notes: Bibliography: p. 33.