﻿Quart. 
  Journ. 
  Geol. 
  Soc. 
  Tol. 
  LIII. 
  PL 
  XLIII 
  

  

  \(Bl. 
  

   Black 
  shale, 
  

   shy 
  limestone^ 
  

  

  Coarse, 
  porphyrite 
  

   Dyke 
  /"', 
  

   itfiSF.c/ip 
  ! 
  ,^j5> 
  T 
  x%. 
  

  

  d 
  of. 
  limestone 
  overlaid 
  by\§i 
  

   e 
  with 
  obscure 
  graptolitesM 
  

  

  Limestone 
  with 
  underlying 
  shale 
  

  

  Andesite 
  

  

  £. 
  : 
  . 
  : 
  .V"£^- 
  N 
  - 
  Martello 
  TOWER 
  

  

  :.vV%^" 
  Th! 
  '" 
  bands 
  of 
  limestone 
  interbedded 
  

   : 
  0M(^p0^----- 
  ujith 
  ash 
  ,all 
  much 
  disturbed 
  

  

  " 
  Trilobite-shale 
  

  

  '-Limestone 
  series 
  very 
  greatly 
  disturbed 
  

  

  ■t7aiZZmi 
  mest 
  ^ 
  

  

  Thrust-conglomerate, 
  

  

  ■gn'ts 
  thrust 
  over 
  greatly-disturbed 
  

  

  bedded 
  limestone 
  

  

  GEOLOGICAL 
  SKETCH-MAP 
  

   ofxhePORTRAINE 
  INLIER 
  

  

  (Co.JDUBLJR) 
  

   Scdlej_4 
  inches 
  =i 
  mile. 
  

  

  aults.] 
  

  

  