"SQ 



ME. F. E. C. EEED OIS^ THE LOWEE PALJilOZOIC [j^OV. 1 899, 



displaced. At the Long Rock the group of igneous rocks — mostly 

 felsites [716] [717J [718] [721] [722] [723]— breaks through 

 them, but thej continue westward along Knockaiie Strand to Boat- 

 strand Harbour with but little change, and occasionally pierced 



Fig. 



13. — Section of sigmoid al fold in the rocks on Morageeha 

 Strand, Annestoiun. 



TPI 



xpa- 



BII 



The same, much compressed , shat- 

 tered and drawn out in the com- 

 mon limb of the S-shaped fold. 



A = Thin calcareous band in slates. A^= 

 B=: Thick calcareous band in slates. B^=: 

 C— Thin flaggy band in slates. C''— 



B"=B much shattered and displaced near the second thrust-plane, TP". 

 D = Black slates. D^=Tbe same, much disturbed. 

 TP^=: Thrust-plane replacing the middle limb of the fold and truncated by a 



later fault, FF. 

 TP^=Probable thrust-plane below th^ level of the beach. 



Fig. 14. — Section on the tvest side of Dunahrattin Head. 





,„/W''l,'^<^"-"'"" 



A=Blaclv shales dipping S.E. at 45" ; much crushed and shattered in places. 

 B = Irapure limestones and calcareous shales (Tramore Limestone Series), with 



Poramboiiites abundant in the lower beds. Same dip as the shales. 

 C=Tntrusive vein of diabase [770] crushed. 

 D = Grey splintery felsite [774]. 



by veins of intrusive felsite [726] [727] [728] [729]. Locally 

 they are much disturbed, but in one spot are horizontal. At 

 Boatstraud Harbour they dip beneath the fossiliferous limestones of 

 Dunabrattin Head, and on the west side of the Head, in a little cove, 

 the section illustrated in fig. 14 is seen. Several masses of diabase 

 [770] and dolerite [771] here also occur close to the mass of felsite 

 [774]. The limestones at their base, which rests conformably on 

 the slates, are dark grey, and dip 45° south-eastward. They 



