286 



outcrop is seen about half way up, and forms a circular ring or belt 

 round the mountain of about a mile and a-half in diameter. The 

 largest opening in the limestone now at work is on the west side, in 

 the townland of Cape Castle, and there it is about 70 feet thick, and 

 appears about the same in all the old quarries round the south face. 

 The limestone lies here on mica slate, and is covered by basalt. The 

 lower beds of any of the numerous excavations are not exposed ; and it 

 is not, therefore, known whether there is greensand or new red sand- 

 stone under it, or not. No sign of either appears at the Cape Castle 

 quarry. They have not worked it yet to the bottom, as they appear 

 to prefer making two or more stages, there being less danger to the 

 quarrymen in that way than by throwing down large blocks of lime- 

 stone or basalt from the top of the quarry. 



33. Ballypatrick Hill lies east of Knocklayd, and is distant from it 

 five miles. The limestone in this hill stands at 750 feet high. Its 

 outcrop is in the form of an ellipsis, one and a-half miles long, in a 

 north-west direction, by one mile wide. This district is about half 

 way between Cushendall and Ballycastle, and the road passes through 

 the eastern border of the limestone. It is quarried here, but the thick- 

 ness cannot be ascertained, as it has been worked here only 8 or 10 feet 

 deep from the surface. 



34. Carnlea Mountain. The limestone quarries on the west side of 

 this mountain, in the townland of Ballyvennaght, are nearly two miles 

 east of Ballypatrick. The rock stands here at 880 feet high. The oval 

 cap of basalt which covers the limestone is about two miles long from 

 north to south, and a mile wide. The three districts, Nos. 32, 33, and 

 34, are very similar; each has an outcrop, forming a ring of chalk, round 

 its cap of basalt. The limestone at each of those stations rests on mica 

 slate, and in Knocklayd, Ballypatrick, and Carnanmore, it stands 

 respectively at 870, 750, and 880 feet above sea level. Those little 

 districts are, moreover, separated from each other by deep valleys, 

 running north and south in the mica slate. 



35. West Torr. The chalk here stands at 900 feet high. It is 

 nearly two miles long in a north-west direction, and half a mile wide. 

 It joins, and is part of the same sheet as that under Carnlea, but it is 

 not covered by trap. The south end of it rests on mica slate, and in 

 that locality there is no new red sandstone under it. The north end 

 rests on the coal-measures of Murlogh Bay, and in that place there is 

 a band of new red sandstone over those coal measures, intervening 

 between them and the chalk. 



"Where the line of the chalk commences, on the east of the green- 

 stone of Fair Head, that is, at its north end, a layer of greensand about 

 three feet thick lies under it, containing quartzy pebbles. This ter- 

 minates to the south, where the coal-measures end. A bed of wacke 

 occurs near the top of the chalk, 5 or 6 feet thick, apparently con- 

 formable with its beds, but, no doubt, has been protruded in a 

 horizontal dike. 



