﻿Vol. 
  53-] 
  

  

  STEAK 
  BTTXMAHOX, 
  CO. 
  WATERFORD. 
  

  

  273 
  

  

  etc. 
  (see 
  fig. 
  1). 
  Not 
  only 
  do 
  none 
  of 
  these 
  igneous 
  rocks 
  penetrate 
  

   the 
  red 
  beds, 
  but 
  they 
  show 
  signs 
  that 
  they 
  were 
  tilted, 
  faulted, 
  

   and 
  crushed 
  along 
  certain 
  planes, 
  as 
  well 
  as 
  eroded 
  before 
  the 
  sand- 
  

   stone 
  was 
  deposited 
  on 
  their 
  edges. 
  A 
  more 
  complete 
  example 
  of 
  

   unconformity 
  it 
  would 
  be 
  hard 
  to 
  find. 
  A 
  sheet 
  of 
  a 
  very 
  con- 
  

   spicuous 
  felspar-porphyry, 
  with 
  large 
  pink 
  felspar-crystals, 
  is 
  seen 
  

   high 
  up 
  in 
  the 
  cliffs 
  some 
  20 
  or 
  30 
  yards 
  west 
  of 
  the 
  red 
  rib, 
  and 
  

   seems 
  to 
  run 
  directly 
  towards 
  the 
  latter. 
  A 
  grass-covered 
  steep 
  

   slope 
  hides 
  the 
  actual 
  junction, 
  but 
  a 
  line 
  of 
  fault 
  is 
  certainly 
  

   suggested 
  by 
  the 
  abrupt 
  termination 
  of 
  the 
  felspar-porphyry 
  within 
  

  

  Fig. 
  1. 
  — 
  Section 
  in 
  cliff 
  at 
  E. 
  end 
  of 
  Ballydouane 
  West 
  Bay. 
  

  

  [Height 
  of 
  section 
  — 
  about 
  40 
  feet.] 
  

  

  A 
  = 
  Dark 
  greenish, 
  coarse, 
  cleaved 
  

  

  ash. 
  

   B 
  = 
  Whitish 
  felsite, 
  fine 
  ash, 
  and 
  

  

  breccia 
  filling 
  old 
  neck. 
  

   C 
  = 
  Greenish-grey 
  dolerite. 
  

   D 
  = 
  Crushed 
  dark 
  green 
  diabase. 
  

  

  R.S.C. 
  = 
  Red 
  sandstones 
  with 
  basal 
  

   conglomerate 
  of 
  diabases, 
  

   dolerites, 
  etc., 
  resting 
  un- 
  

   conformably 
  upon 
  the 
  eroded 
  

   edges 
  of 
  C. 
  

   FF 
  = 
  Faults. 
  

  

  a 
  few 
  yards 
  of 
  the 
  red 
  beds. 
  There 
  is 
  no 
  evidence 
  of 
  the 
  basal 
  

   layer 
  of 
  the 
  red 
  sandstone 
  being 
  a 
  friction-breccia, 
  since 
  the 
  sand- 
  

   stones 
  and 
  fragments 
  in 
  the 
  breccias 
  show 
  no 
  signs 
  of 
  crushing 
  or 
  

   shattering. 
  There 
  is 
  moreover 
  no 
  sign 
  of 
  alteration 
  or 
  disturbance 
  of 
  

  

  