﻿612 
  ME. 
  S. 
  S. 
  BUCKHAN 
  ON 
  THE 
  BAJOCIATT 
  [Dec. 
  1 
  89 
  7, 
  

  

  (7) 
  The 
  Lower 
  Trigonia-grit. 
  

  

  This 
  deposit 
  may 
  be 
  seen 
  overlying 
  the 
  beds 
  below 
  it 
  in 
  sequence 
  

   at 
  the 
  places 
  already 
  noted. 
  Its 
  connexion 
  with 
  the 
  T. 
  Buckmani-* 
  

   grit 
  maybe 
  seen 
  at 
  ' 
  Roadstone 
  Hole,' 
  especially 
  at 
  the 
  eastern 
  end. 
  

   There 
  is, 
  however, 
  no 
  complete 
  section 
  to 
  show 
  the 
  exact 
  thickness 
  

   of 
  the 
  whole 
  bed. 
  The 
  deposit 
  has 
  just 
  the 
  lithic 
  * 
  character 
  of 
  the 
  

   same 
  bed 
  in 
  the 
  Mid-Cotteswolds, 
  and 
  the 
  distinctive 
  fossil 
  Aulaco- 
  

   thyris 
  Meriani 
  has 
  been 
  found. 
  2 
  

  

  (8) 
  The 
  T. 
  Buckmani-grit. 
  

  

  This 
  bed 
  is 
  worked 
  for 
  roadstone. 
  Hence 
  the 
  name 
  * 
  Roadstone 
  

   Hole,' 
  applied 
  by 
  the 
  workmen 
  to 
  the 
  quarry, 
  where 
  its 
  relation 
  to 
  

   the 
  Lower 
  Trigonia-giit 
  may 
  be 
  observed. 
  There 
  is 
  shown, 
  about 
  

   4 
  feet 
  above 
  that 
  bed, 
  a 
  seam 
  of 
  marly 
  clay 
  similar 
  to 
  the 
  deposit 
  

   in 
  which 
  Terebratula 
  BucTcmani 
  is 
  found 
  in 
  the 
  Mid-Cotteswolds 
  ; 
  

   but 
  that 
  fossil 
  I 
  have 
  not 
  found 
  in 
  it 
  here. 
  However, 
  it 
  occurs 
  on 
  

   the 
  spoil-heap 
  of 
  the 
  ' 
  Roadstone,' 
  where 
  Terebratula 
  Uptoni 
  and 
  

   an 
  Acanthotliyris 
  have 
  also 
  been 
  found. 
  

  

  The 
  beds 
  of 
  roadstone 
  at 
  ' 
  Roadstone 
  Hole 
  ' 
  are 
  inclined 
  at 
  a 
  

   steep 
  angle 
  of 
  about 
  55°, 
  dipping 
  to 
  the 
  north, 
  and 
  on 
  account 
  

   of 
  their 
  disturbed 
  and 
  tumbled 
  condition 
  it 
  is 
  difficult 
  to 
  say 
  what 
  

   their 
  exact 
  thickness 
  may 
  be. 
  No 
  section 
  shows 
  their 
  relation 
  to 
  

   the 
  Gryphite-grit. 
  

  

  (e) 
  The 
  Gryphite-grit. 
  

  

  The 
  greater 
  part 
  of 
  this 
  grit, 
  3 
  and 
  its 
  connexion 
  with 
  the 
  Not- 
  

   grove 
  Freestone, 
  maybe 
  clearly 
  seen 
  in 
  the 
  quarry 
  above, 
  and 
  to 
  the 
  

   east 
  of, 
  the 
  Rolling 
  Bank, 
  near 
  the 
  Ordnance-datum 
  972 
  on 
  the 
  

   6-inch 
  map. 
  Similar 
  observations 
  may 
  be 
  made 
  at 
  the 
  Whittington 
  

   quarry. 
  Just 
  south 
  of 
  the 
  Rolling 
  Bank 
  the 
  Gryphite-grit, 
  with 
  

   Notgrove 
  Freestone 
  above 
  it, 
  is 
  obscurely 
  shown. 
  

  

  (f) 
  The 
  Notgrove 
  Freestone. 
  

  

  The 
  connexion 
  of 
  this 
  bed 
  with 
  the 
  overlying 
  Witchellia-gnt 
  

   may 
  be 
  seen 
  in 
  the 
  Rolling 
  Bank 
  Quarry, 
  as 
  well 
  as 
  in 
  the 
  quarry 
  

   to 
  the 
  east 
  thereof. 
  No 
  section 
  allows 
  of 
  its 
  full 
  thickness 
  being 
  

   accurately 
  measured. 
  The 
  nearest 
  approximation 
  is 
  obtained 
  at 
  

   the 
  Whittington 
  quarry 
  ; 
  and 
  estimates 
  show 
  that 
  it 
  may 
  be 
  some- 
  

   what 
  thicker 
  near 
  the 
  Rolling 
  Bank. 
  The 
  section 
  (Diagr. 
  I, 
  p. 
  614) 
  

   showing 
  the 
  quarries 
  east 
  of 
  the 
  Rolling 
  Bank, 
  and 
  the 
  relation 
  of 
  

   this 
  to 
  overlying 
  beds, 
  also 
  indicates 
  how 
  the 
  thickness 
  may 
  be 
  

   measured 
  approximately. 
  

  

  1 
  ' 
  Lithic,' 
  pertaining 
  to 
  stone 
  ; 
  ' 
  lithological 
  ' 
  signifies 
  pertaining 
  to 
  the 
  

   science 
  of 
  stone, 
  which 
  is 
  not 
  the 
  required 
  meaning. 
  

  

  2 
  'Mid-Cotteswolds,' 
  p. 
  413. 
  

  

  3 
  There 
  is 
  5 
  feet 
  of 
  Gryphite-grit 
  ; 
  and 
  that 
  is 
  the 
  whole 
  thickness 
  of 
  the 
  bed 
  

   at 
  Leckhampton 
  Hill 
  (' 
  Mid-Cotteswolds,' 
  p. 
  410). 
  About 
  4 
  feet 
  of 
  Notgrore 
  

   Freestone 
  is 
  exposed 
  above 
  that 
  east 
  of 
  the 
  Rolling 
  Bank. 
  

  

  