42 



ARCH^AN. 



Volcanic series, consisting of volcanic fragmentary ejectamenta, 

 agglomerates, ash-beds, and slates, occurring near Bangor, 

 and referred to as the Bangor Beds. (See Fig. 5 and 

 Fig. 8, p. 54.) 



Felsitic series, consisting chiefly of quartz-felsites, and probably 

 also of volcanic origin, occurring near Llanddeiniolen and 

 Dinorwig, and referred to as the Dinorwig Beds. 



Granitoid series, occurring near Caernarvon, and referred to as 

 the Caernarvon Beds. 



U rS 



fq rt 



U H-l 



c ta 

 w \4 





Road from Bangor to '*' I 

 Llandegai. 



Road South of Penrhyn Arms. „. 



Road near entrance to 

 Recreation Ground. *•- 



ffipq 





0.'C3 . 

 C C a 



o — ■*■ 

 bo bj) ° 



ra o 



O r;— O 



3 y; QJ fl3 



•a £ oj nj 



