196 The Rev. W. Conybeahe on 



Descriptive Notes referring to the Outline of Sections 



Presented by a part of the coasts of Antrim and Derry, 



Collected by the Rev. AV. Coxybeare, M.G.S. 



Frotn the joint Observations of 



The Rev. W. Buckland, M.G.S. Reader in Mineralogy to the 

 University of Oxford^ 



And himself during a Tour in the Summer o/'lSlS. 



The Section, Plates 10. 10*. accompanying these notes, exhibits 

 a line of coast extending rather more than fifty miles from the 

 promontory on the south of Glenarm* in Antrim, to the strand of 

 Macgilligan in Londonderry, where the basaltic mountains receding 

 to the south finally quit the vicinity of the sea. 



* The first point in which the cliffs of the Antrim coast expose sections of the basaltic 

 rocks, is Blackhead, on the south-east of the peninsula of Magce ; this point is (following 

 the iudented line of the coast) more than twenty miles to the south of that at which the 

 delineations accompanying this paper commence : our information concerning that interval 

 not being sufficiently precise to admit its being exhibited in such a form. 



The following short notice will however contribute in some measure to supply the 

 deficiency, and being prefixed to the descriptions in the text will render them a continuous 

 survey of all that part of the basaltic area which presents a precipitous face towards 

 the sea. 



From Blackhead the eastern coast of the peninsula of Magee exhibits a long and lofty 

 range of basaltic cliffs called the Gobbins, extending nearly ciglit miles towards Portmuck 

 at the north-cast extremity of the peninsula; near this point the chalk emerges from 

 beneath the basalt, and the lias from beneath the chalk. Hence to the mouth of Larne 

 Jough the cliffs teas*, the hills rising with a gradual acclivity from tiic beach ; the same 



