﻿Fig. 7. — Vertical section of the heels 

 posed hetween the fault on the 

 side of Drumanagh Headland 

 Loughshinny Bay. 



Top not exposed 



Fault 



ex 



- 



east 



and 





m 





<D 





»— « 



Ui 



^ 



O X! 





m 



>> 



1 



ri 



c;3 





1 



^ 



o 



60 



q 



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o 



o 



:s 





C/) 





O 





^ 



Base not exposed 

 [Vertical scale : 1 inch = 120 feet.] 



of P. Becheri. Hence 

 they may be separated 

 from the Cyathaxonia- 

 Eeds and distinguished 

 by the term Posido- 

 nomya-Limestones,^ 

 As the base of the 

 Cyathaxonia - Beds has 

 not been recognized in 

 any of the sections along 

 this coast, the complete 

 thickness of that subzone 

 in this region cannot be 

 stated. We have seen 

 that at least 210 feet of 

 these beds occur on the 

 south side of Drumanagh, 

 at which locality the 

 lowest beds exposed near 

 Brook's End appear to 

 be absent, and the total 

 thickness of the expo- 

 sures in this area cannot 

 be less than 250 feet. 



(B) Loughshinny Bay 

 to Limekiln Cove. 

 {Posidonomy a -Jjime- 

 stones and Lough- 

 shinny Black Shales.) 



The northern side of 

 Drumanagh forms the 

 southern shore of Lough- 

 shinny Bay, and along 

 it the beds above the 

 highest massive lime - 

 stone just mentioned are 

 to be seen, thrown into 

 numerous anticlines and 

 synclines with, however, 

 on the whole, an ascend- 

 ing succession to the 



^ On palasontological 

 grounds, Dr. Vaughan would 

 include in the Posidonomya- 

 Limestone group the two 

 uppermost of the massive 

 limestones with their inter- 

 vening strata, thus adding 

 about 100 feet to their thick- 

 ness. This view has been 

 adopted in the succession of 

 strata tabulated on p. 434 

 and in fig. 7. 



