Yol. 55.] BEDDED ROCKS OF COUNTY WATERFOED. 739 



beds against it, as described by the present author in a former 

 paper. ^ 



The rock is greenish to purplish-grey, and is banded with light 

 green or reddish parallel layers, which have a regular dip of 60° 

 north-north-westward, and apparently represent original planes of 

 bedding. It is also frequently traversed by a network of pale 

 greenish or yellowish veins, as in the case of serpentine ; and 

 is in places brightly stained a vivid red or verdigris-green by 

 impregnations of iron- and copper-ores. Micaceous haematite also 

 occurs on some slickensided surfaces and in veins, in addition to 

 a greenish earthy carbonate of copper. There exist also irregular 

 nests and bands of pale greenish-yellow epidote, and white quartz 

 and calcite — occasionally tinged pink by iron. Sometimes the rock 

 seems to have suffered brecciation in place, and subsequently the 

 fragments have been re-cemented. 



This peculiar altered limestone yields a few fossils, and I have 

 obtained a crushed specimen of an Orthis or Orthisina from it. 

 There are specimens of Orthisina sp. (?) also from it in the Geological 

 Survey Collection ; and in the Memoir are recorded in addition 

 (pp. 18, 24, 59) Orthis simplex, Phacops truncato-caudatus, and Tri- 

 nucleus seticornis (probably Tr. concentricus). 



In the small coves in the headland west of Ballydouane Bay 

 these altered limestones are not so distinctly banded, and are under- 

 lain by a mass of intrusive nodular felsite [250] associated with 

 an earlier intrusion of dolerite [249], which has suffered brecciation 

 in places. A volcanic neck of felsitic conglomerate containing 

 many fragments of the limestone brings the section to a close. 



(g) Killelton Cove to Ballyvoyle. 



In the western Killelton Cove, part of which is called Lady's Cove 

 on the 6-inch Ordnance map, black unfossiliferous slates (some of 

 which are banded) are found in contact with a green felsite [205], 

 and from this point westward to Ballyvooney Cove black and grey 

 unfossiliferous slates compose the cliffs, with occasional intrusive 

 veins, sheets, and dykes of various ' greenstones ' [203] and felsites 

 [204]. The latter have been affected to some extent by the crushing 

 and disturbances which have cleaved or contorted the slates. The 

 slates show in several places a distinct north-north-westerly dip at 

 angles varying from 60° to 70°. 



On the western side of Ballyvooney Harbour there is found a 

 late intrusion of quartz-porphyry [209], with no signs of crushing, 

 but enclosing fragments of the cleaved slates and felsites. From 

 this spot for about 2 miles westward to Stradbally Creek the cliffs 

 are lofty and precipitous, and consist of similar highly-cleaved 

 black and grey slates with bands of grit, either vertical or dipping 

 steeply north-north-westward. But at about | mile west of the 

 mouth of the creek the dip of the slates changes to about 70'' 

 south-westward. At the mouth of the creek they are vertical, and 

 ' Quart. Journ. Geol. Soc. vol. liii (1897) p. 269. 



