Quart Joura.Geol Soc.Vol XXXI £1 VIII 



M'hili-suiiH Bi-hi'Ii ii little III Ul<- West 



^.Fig.4.Seclionm.from lie Valley South of Tjgwyn to the cliff North of S* David's Head. 



f 



X.nlh nl'S' D.-ivnls II I 



-, Si-ilim, IV Irani Tretui 



on the East side of Aber-pwil, in Aber eiddY Ba 



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g ^^Hi^ *• 



-Aimcrfcr^h-^ — i~"\~^ 



Partof Trcmaxloc Group 



\^ - - jr.ui^ ± irTT^\ %"^ ^\^*esr^^ p t % \- 



<kt$Jistn2,',56 Charing I 



S. ;.!.- ,.(' Sf.tjon.s II HI IV V Sit In. hc.s 1 .> ;■ SUit nlv .\lili ■ 



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