﻿618 
  THE 
  BAJOCIAN 
  OF 
  THE 
  CLEEVE 
  HILL 
  PLATEA.U. 
  [Dec. 
  1 
  897. 
  

  

  of 
  Harford 
  Sand 
  on 
  the 
  same 
  level 
  as 
  a 
  freestone-quarry. 
  No. 
  2 
  

   can 
  only 
  be 
  surmised 
  from 
  the 
  stones 
  of 
  the 
  field. 
  No. 
  3 
  seems 
  to 
  

   extend 
  in 
  a 
  north-westerly 
  direction 
  from 
  just 
  before 
  the 
  southern 
  

   entrance 
  to 
  Cleeve 
  Common 
  (by 
  Upper 
  Hill 
  Farm), 
  and 
  to 
  be 
  nearly 
  

   in 
  the 
  line 
  of 
  a 
  valley-like 
  depression, 
  of 
  which 
  perhaps 
  it 
  may 
  be 
  

   the 
  cause. 
  No. 
  4 
  is 
  plainly 
  shown 
  at 
  ' 
  Roadstone 
  Hole,' 
  where 
  

   the 
  strata 
  are 
  tilted 
  at 
  an 
  angle 
  of 
  about 
  55°. 
  No. 
  7 
  is 
  at 
  the 
  

   northern 
  end 
  of 
  the 
  Rolling 
  Bank, 
  where 
  the 
  Upper 
  Trigonia- 
  and 
  

   Clypeus-beds 
  are 
  let 
  down 
  level 
  with 
  beds 
  of 
  the 
  Lower 
  Freestone 
  — 
  

   a 
  fall 
  of 
  about 
  100 
  feet 
  ; 
  this 
  fault 
  extends 
  across 
  the 
  hill. 
  

  

  At 
  the 
  southern 
  end 
  of 
  the 
  Rolling 
  Bank 
  quarry, 
  another 
  

   fault, 
  No. 
  5, 
  has 
  lately 
  been 
  opened 
  to 
  view. 
  1 
  By 
  this 
  fault 
  the 
  

   Phillipsiana-beds 
  are 
  tilted 
  at 
  a 
  steep 
  angle 
  against 
  the 
  Clypeus-grit 
  

   of 
  the 
  other 
  part 
  of 
  the 
  quarry 
  ; 
  and 
  in 
  such 
  a 
  manner 
  that, 
  on 
  

   about 
  this 
  level, 
  all 
  the 
  strata 
  from 
  the 
  Phillipsiana-beds 
  to 
  the 
  

   Gryphite-grit 
  are 
  passed 
  in 
  succession 
  in 
  a 
  southward 
  direction. 
  

   But 
  there 
  is 
  another 
  feature 
  of 
  interest 
  about 
  this 
  fault 
  : 
  it 
  is 
  

   separated 
  from 
  the 
  rest 
  of 
  the 
  quarry 
  by 
  a 
  fissure 
  into 
  which 
  has 
  

   dropped 
  a 
  mass 
  of 
  vertically-bedded 
  conglomerate. 
  It 
  yields 
  the 
  

   following 
  section 
  : 
  — 
  

  

  Ft. 
  ins. 
  

  

  1. 
  Rubble 
  of 
  the 
  Clyjpeus-gvit 
  with 
  some 
  red 
  clay, 
  and 
  calcareous 
  

  

  infiltrations 
  1 
  6 
  

  

  2. 
  Fine 
  gravel 
  with 
  much 
  red 
  clay, 
  the 
  gravel 
  not 
  waterworn 
  ... 
  1 
  8 
  

  

  3. 
  Limestone, 
  lumps 
  of 
  Clypeus-grit, 
  and 
  some 
  red 
  marl, 
  Terebra- 
  

  

  tula 
  globata, 
  Bhynchonella 
  hampenensis 
  2 
  

  

  The 
  whole 
  is 
  much 
  cemented 
  together 
  by 
  a 
  calcareous 
  deposition 
  

   from 
  percolating 
  rainwater. 
  

  

  The 
  relationship 
  of 
  this 
  section 
  to 
  the 
  other 
  beds 
  is 
  shown 
  in 
  

   the 
  diagram 
  (III) 
  facing 
  this 
  page. 
  Bed 
  No. 
  3 
  is 
  apparently 
  the 
  

   same 
  as 
  that 
  marked 
  No. 
  3 
  on 
  the 
  left 
  — 
  it 
  is 
  the 
  top 
  of 
  the 
  Clypeus- 
  

   grit. 
  Above 
  that, 
  on 
  the 
  left, 
  the 
  band 
  of 
  red 
  clay 
  is 
  particularly 
  

   noticeable, 
  associated 
  somewhat 
  irregularly 
  with 
  fine 
  gravel 
  ; 
  over 
  

   that 
  is 
  more 
  rubble, 
  of 
  apparently 
  the 
  Clypeus-grit, 
  and 
  mixed 
  with 
  

   that 
  again 
  is 
  rubble 
  of 
  the 
  Phillipsiana-beds. 
  

  

  The 
  explanation, 
  therefore, 
  appears 
  to 
  be 
  this 
  : 
  — 
  The 
  northern 
  

   portion 
  (A) 
  of 
  the 
  Rolling 
  Bank 
  quarry 
  fell 
  in 
  after 
  the 
  Fullers' 
  

   Earth 
  Clay 
  had 
  been 
  removed 
  from 
  Cleeve 
  Hill, 
  and 
  after 
  a 
  

   relic 
  of 
  it 
  — 
  the 
  red 
  clay 
  — 
  had 
  been 
  worked 
  up 
  with 
  some 
  top 
  

   rubble 
  of 
  the 
  Clypeus-grit, 
  but 
  before 
  the 
  Clypeus-grit 
  had 
  been 
  

   removed. 
  This 
  fall 
  caused 
  the 
  fissure 
  to 
  open, 
  and 
  also 
  tilted 
  the 
  

   beds 
  of 
  portion 
  B. 
  By 
  this 
  tilting 
  the 
  uppermost 
  beds 
  of 
  portion 
  B 
  

   slid 
  into 
  the 
  fissure, 
  while 
  the 
  Clypeus-, 
  Upper 
  Trigonia-, 
  and 
  part 
  

   of 
  the 
  Phillipsiana-grits 
  of 
  portion 
  B 
  slid 
  over 
  to 
  C 
  and 
  perhaps 
  

   extended 
  towards 
  A. 
  These 
  beds 
  have 
  subsequently 
  been 
  removed 
  

   by 
  the 
  same 
  agency 
  as 
  that 
  which 
  has 
  removed 
  all 
  the 
  Clypeus- 
  

   and 
  Upper 
  Trigonia-grits 
  from 
  Cleeve 
  Hill, 
  except 
  where 
  they 
  have 
  

   been 
  protected 
  by 
  being 
  thus 
  let 
  in 
  by 
  a 
  fault. 
  

  

  1 
  No. 
  6 
  is 
  quite 
  a 
  small 
  fault 
  in 
  the 
  Rolling 
  Bank. 
  

  

  