[ 250 ] 



XXV. 



THE PRE-GLACIAL EAISED BEACH OF THE SOUTH 

 COAST OF IRELAND. 1 



By W. B. WRIGHT, B.A., and H. B. MUFF, B.A., F.G.S. 



(Plates XXIII.-XXXI.) 



[Read, February 16 ; Received for Publication, March 18 ; 

 Published, September 12, 1904. J 



CONTENTS. 

 Part I. 



1. Introduction, . . . 250 



2. Glaciation, . . . .251 



3. Typical Sections, . .253 



4. General Account of Raised Shore 



Platform and Overlying Deposits, 257 



5. General Conclusions, . . . 271 



Part II. 

 Detailed Description of Sections visited between Baltimore and Carnsore Point, . 274 



PAET I. 



1. Introduction. 



The attention of workers on the Pleistocene Geology of Ireland 

 has up to the present been mainly concentrated on the glacial and 

 post-glacial deposits of the country. With regard to its condition 

 immediately before the advent of the ice, little, however, is known. 

 Indeed, it is only in that part of Ireland which has been most 

 neglected by glacial geologists that there existed a condition of 

 glaciation sufficiently feeble for the ample preservation of uncon- 

 solidated deposits laid down prior to the boulder-clay. Such an 

 area was not likely to attract those who, as pioneers in the study 

 of the glaciation of the country, naturally preferred to work in 

 districts where the phenomena were more marked and striking. 



During the examination of the drifts of Cork by the Geological 

 Survey in the year 1903, some raised-beach deposits, obviously 

 older than any boulder-clay of the district, were found fringing 



1 The observations relating to the neighbourhood of Cork Harbour are communicated 

 -with the permission of the Director of H. M. Geological Survey. 



