﻿530 
  MESSRS. 
  C. 
  I. 
  GARDINER 
  AND 
  S. 
  H. 
  REYNOLDS 
  ON 
  [Dec. 
  1897, 
  

  

  Greatly 
  disturbed 
  limestone, 
  with 
  a 
  mass 
  of 
  shale 
  faulted 
  in, 
  

   occupies 
  the 
  coast 
  by 
  the 
  next 
  little 
  inlet 
  up 
  to 
  the 
  succeeding 
  point 
  ; 
  

   but 
  there 
  we 
  again 
  come 
  upon 
  compact 
  limestone 
  which 
  occupies 
  the 
  

   next 
  projecting 
  part 
  of 
  the 
  coast 
  ; 
  and 
  finally, 
  as 
  one 
  reaches 
  the 
  

   little 
  bay 
  known 
  as 
  Priest's 
  Chamber, 
  the 
  compact 
  limestone 
  is 
  over- 
  

   lain 
  by 
  bedded 
  limestones 
  with 
  shaly 
  partings, 
  and 
  this 
  becomes 
  

   more 
  and 
  more 
  disturbed, 
  passing 
  into 
  a 
  thrust-conglomerate 
  which, 
  

   as 
  we 
  mentioned 
  before, 
  occurs 
  here 
  at 
  the 
  junction 
  of 
  the 
  limestone 
  

   with 
  the 
  grit 
  series. 
  

  

  (b) 
  The 
  Coast-section 
  South 
  of 
  the 
  Grits. 
  

  

  Limestone-beds 
  are 
  exposed 
  along 
  a 
  strip 
  of 
  coast, 
  some 
  250 
  yards 
  

   long, 
  south 
  of 
  the 
  grits 
  in 
  the 
  sandy 
  bay 
  near 
  St. 
  Kenny's 
  Well. 
  

   They 
  are 
  not 
  nearly 
  so 
  calcareous 
  as 
  the 
  beds 
  just 
  described, 
  but 
  are 
  

   of 
  the 
  nature 
  of 
  soft 
  argillaceous 
  limestones. 
  It 
  is 
  due 
  to 
  this 
  fact, 
  

   no 
  doubt, 
  that 
  they 
  have 
  been 
  so 
  much 
  denuded 
  away, 
  and 
  that 
  

   they 
  are 
  now 
  only 
  exposed 
  in 
  isolated 
  patches 
  projecting 
  through 
  

   the 
  sand. 
  

  

  The 
  lowest 
  beds 
  are 
  exposed 
  at 
  low 
  tide 
  at 
  a 
  spot 
  about 
  150 
  yards 
  

   S.S.E. 
  from 
  the 
  Gamekeeper's 
  Lodge. 
  They 
  consist 
  of 
  calcareous 
  

   shales, 
  and 
  rest 
  on 
  igneous 
  rocks. 
  The 
  latter 
  show 
  signs 
  of 
  much 
  

   crushing, 
  while 
  the 
  former 
  are 
  cracked 
  and 
  veined 
  with 
  quartz, 
  and 
  

   this 
  renders 
  it 
  probable 
  that 
  the 
  junction 
  is 
  a 
  faulted 
  one. 
  Other 
  

   exposures 
  of 
  the 
  rock 
  occur, 
  and 
  it 
  appears 
  to 
  pass 
  up 
  into 
  a 
  black 
  

   limestone 
  with 
  shaly 
  partings 
  : 
  this 
  becomes 
  nodular 
  in 
  its 
  upper 
  

   parts, 
  and 
  is 
  separated 
  from 
  the 
  grit 
  series 
  by 
  a 
  thrust-conglomerate, 
  

   as 
  is 
  the 
  case 
  with 
  the 
  limestones 
  of 
  Priest's 
  Chamber. 
  The 
  dip 
  of 
  

   these 
  limestones 
  is 
  about 
  30° 
  S.E. 
  No 
  fossils 
  were 
  found 
  in 
  them. 
  

  

  (c) 
  Exposures 
  Inland. 
  

  

  South-west 
  of 
  the 
  northern 
  martello 
  tower 
  are 
  several 
  exposures 
  

   of 
  calcareous 
  rocks, 
  most 
  of 
  them 
  close 
  to 
  the 
  Pigeon 
  House 
  and 
  

   the 
  Tower 
  which 
  have 
  been 
  built 
  in 
  the 
  Deer 
  Park. 
  Though 
  lime- 
  

   stone-bands 
  interbedded 
  with 
  shales 
  occur, 
  the 
  majority 
  of 
  the 
  

   exposures 
  are 
  in 
  calcareous 
  or 
  shaly 
  ashes. 
  

  

  Some 
  of 
  these 
  ashy 
  limestones 
  contain 
  perfectly-rounded 
  pebbles 
  

   of 
  compact 
  andesites, 
  light 
  green 
  in 
  colour. 
  South-west 
  of 
  the 
  

   Pigeon 
  House 
  occurs 
  a 
  fossiliferous 
  limestone 
  with 
  included 
  frag- 
  

   ments, 
  resting 
  on 
  a 
  calcareous 
  ash 
  which 
  overlies 
  a 
  calcareous 
  

   conglomerate 
  containing 
  corals 
  ; 
  all 
  these 
  beds 
  dip 
  at 
  a 
  high 
  angle 
  

   (? 
  60°) 
  to 
  10° 
  south 
  of 
  east. 
  A 
  calcareous 
  conglomerate 
  also 
  occurs 
  

   near 
  the 
  Tower 
  itself, 
  and 
  under 
  it 
  are 
  limestones 
  with 
  shaly 
  partings 
  

   and 
  ash-bands, 
  dipping 
  at 
  about 
  45° 
  S.E. 
  

  

  The 
  Pigeon 
  House 
  is 
  built 
  on 
  coarse 
  ashes, 
  but 
  nodular 
  and 
  shaly 
  

   limestones 
  occur 
  here 
  also. 
  The 
  fossils 
  which 
  were 
  found 
  in 
  these 
  

   calcareous 
  beds 
  indicate 
  that 
  their 
  age 
  is 
  the 
  same 
  as 
  that 
  of 
  the 
  

   limestones 
  of 
  the 
  shore, 
  and 
  there 
  can 
  be 
  no 
  doubt 
  that 
  we 
  are 
  

   dealing 
  here 
  with 
  lower 
  beds 
  of 
  the 
  same 
  series. 
  

  

  