﻿Vol. 
  53-] 
  

  

  NEAR 
  BUNMAHON, 
  CO. 
  WATERFORD. 
  

  

  283 
  

  

  features 
  of 
  the 
  surface. 
  Not 
  all 
  of 
  these 
  had 
  their 
  axes 
  trending 
  

   from 
  east 
  to 
  west. 
  Thus 
  the 
  Brownstown 
  Head 
  anticlinal 
  and 
  

   that 
  of 
  the 
  Templetown 
  district 
  in 
  Co. 
  Wexford 
  have 
  an 
  E.N.E. 
  

   course. 
  If 
  we 
  suppose 
  a 
  minor 
  sharp 
  fold, 
  with 
  a 
  steeper 
  northern 
  

   limb, 
  to 
  hav« 
  occurred 
  in 
  the 
  Bunmahon 
  district 
  with 
  this 
  course 
  

   and 
  to 
  have 
  been 
  dislocated 
  by 
  faults, 
  and 
  blocks 
  of 
  it 
  to 
  have 
  been 
  

   let 
  down 
  into 
  the 
  older 
  beds, 
  we 
  shall 
  be 
  able 
  to 
  account 
  for 
  the 
  

   occurrence 
  of 
  these 
  patches. 
  

  

  Entering 
  into 
  

   details, 
  we 
  see 
  first 
  Fig. 
  8.— 
  Sketch-map 
  of 
  Kennedy's 
  Island, 
  

   that 
  this 
  hypo- 
  Bunmahon 
  Head. 
  

  

  thetical 
  anticline 
  is 
  

   cut 
  across 
  almost 
  at 
  

   right 
  angles 
  to 
  its 
  

   strike 
  by 
  the 
  inlet 
  

   of 
  Ballydouane 
  Bay. 
  

   The 
  next 
  points 
  to 
  

   notice 
  are 
  the 
  faults 
  

   that 
  have 
  affected 
  it. 
  

   These 
  may 
  roughly 
  

   be 
  divided 
  into 
  two 
  

   sets 
  — 
  one 
  trending 
  

   in 
  ageneralW.S.W.- 
  

   E.N.E. 
  direction, 
  

   and 
  the 
  other 
  run- 
  

   ning 
  transversely 
  to 
  

   them, 
  with 
  a 
  down- 
  

   throw 
  to 
  the 
  east. 
  

   In 
  the 
  accompanying 
  

   sketch-maps 
  (figs. 
  8 
  

   & 
  9) 
  the 
  first 
  set 
  

   are 
  marked 
  A, 
  B, 
  C, 
  

   etc., 
  and 
  the 
  trans- 
  

   verse 
  set 
  a, 
  6, 
  c, 
  etc. 
  

  

  Eault 
  A 
  occurs 
  on 
  the 
  north 
  side 
  of 
  Ballydouane 
  Bay, 
  a 
  short 
  

   distance 
  inland 
  ; 
  its 
  exact 
  position 
  is 
  indeterminable, 
  but 
  its 
  

   influence 
  is 
  plain, 
  for 
  it 
  lets 
  down 
  on 
  the 
  south 
  the 
  steep 
  northern 
  

   limb 
  of 
  the 
  anticline 
  of 
  Old 
  Eed 
  Sandstone. 
  

  

  Fault 
  B 
  has 
  a 
  southerly 
  hade 
  of 
  about 
  45°, 
  and 
  is 
  seen 
  in 
  the 
  

   cliffs 
  on 
  the 
  east 
  side 
  of 
  the 
  bay. 
  This 
  is 
  a 
  reversed 
  fault, 
  as 
  shown 
  

   in 
  fig. 
  10, 
  p. 
  285. 
  

  

  Fault 
  C, 
  at 
  St. 
  John's 
  Island, 
  has 
  a 
  downthrow 
  to 
  the 
  north, 
  and 
  

   thus, 
  by 
  faults 
  B 
  and 
  C, 
  a 
  mass 
  of 
  Old 
  Bed 
  Sandstone 
  is 
  troughed 
  

   into 
  the 
  older 
  rocks. 
  

  

  The 
  small 
  rib 
  of 
  red 
  rocks 
  in 
  the 
  bay 
  of 
  Ballydouane 
  West 
  has 
  

   rather 
  obscure 
  relations, 
  but 
  it 
  belongs 
  to 
  the 
  northern 
  limb 
  of 
  the 
  

   anticline. 
  On 
  the 
  north 
  it 
  is 
  probably 
  cut 
  off 
  by 
  a 
  continuation 
  of 
  

   fault 
  A, 
  shifted 
  southward 
  by 
  the 
  transverse 
  fault 
  c 
  up 
  the 
  Bally- 
  

   douane 
  stream-valley. 
  On 
  the 
  west 
  it 
  is 
  seen 
  to 
  be 
  cut 
  off 
  by 
  a 
  

   transverse 
  fault 
  a. 
  

  

  [Scale: 
  12 
  inches: 
  

  

  :1 
  mile.] 
  

  

  1 
  a 
  = 
  Pillar 
  of 
  greenish 
  

  

  1 
  = 
  Greenish 
  ash, 
  diabase, 
  etc. 
  

   ash. 
  

  

  2=Felsitic 
  neck. 
  3=Red 
  sandstones, 
  shales, 
  and 
  

   conglomerates. 
  

  

  4 
  = 
  Epidotic 
  felstones. 
  

  

  De, 
  DE 
  = 
  Faults. 
  

  

  