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1. Isolated pods of subaqueous welded ash-flow tuff : A distal facies of the capel curig volcanic formation (Ordovician), North Wales

by Howells, M.F | Campbell, S.D.G | Reedman, A.J.

Source: Geological magazine : Vol. 122 Iss. 1-6 Year. 1985Material type: Article Article; Format: print Availability: Items available for reference: (1).

2. Ordovician (Caradoc) Marginal Basin Volcanism in Snowdonia (North-West Wales).

by Howells, M.F | Reedman, A.J | Campbell, S.D.G.

Source: Geological magazine : Vol. 130 Iss. 1-6 Year. 1993Material type: Article Article; Format: print Availability: Items available for reference: (1).

3. Capel curig and Betws-y-Coed : Description of 1:25 000 sheet SH 75

by Natural Environmental Research Council | Howells, M.F [Compiler] | Francis, E.H [Compiler] | Leveridge, B.E [Compiler] | Evans, C.D.R [Compiler].

Material type: Text Text; Format: print ; Literary form: Not fiction Publisher: London : Her majesty's stationery office ; 1978 Availability: Items available for loan: [Call number: 554.2927 NER] (1).

4. Dolgarrog : Description of 1:25 000 sheet SH 76

by Natural Environment Research Council | Howells, M. F [Compiler] | Leveridge, B. E [Compiler] | Evans, C. D. R [Compiler] | Nutt, M. J. C [Compiler].

Material type: Text Text; Format: print ; Literary form: Not fiction Publisher: London : Her Majesty's stationery office ; 1981 Availability: Items available for loan: [Call number: 554.2927 NER] (1).

5. The pitts head tuff formation : A subaerial to submarine welded ash-flow tuff of ordovician age, North Wales

by Reedman, A. J | Howells, M. F | Orton, G | Campbell, S. D. G.

Source: Geological magazine : Vol. 124 Iss. 1-6 Year. 1987Material type: Article Article; Format: print Availability: Items available for reference: (1).

6. The emplacement of geochemically distinct groups of rhyolites during the evolution of the lower rhyolitic tuff formation caldera (Ordovician), North Wales, U.K.

by Campbell, S.D.G | Reedman, A.J | Howells, M.F | Mann, A.C.

Source: Geological magazine : Vol. 124 Iss. 1-6 Year. 1987Material type: Article Article; Format: print Availability: Items available for reference: (1).

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