﻿IN 
  THE 
  CONTORTED 
  DRIFT 
  OF 
  CROMER. 
  

  

  231 
  

  

  of 
  these 
  masses 
  attain, 
  together 
  with 
  the 
  remarkable 
  way 
  in 
  which 
  

   the 
  continuity 
  of 
  the 
  chalk 
  is 
  preserved 
  without 
  disruption. 
  This 
  

   characteristic 
  interested 
  me 
  much 
  ; 
  and 
  fortunately 
  one 
  of 
  the 
  best- 
  

   defined 
  of 
  the 
  boulders 
  of 
  this 
  form 
  I 
  found 
  to 
  be 
  partially 
  within 
  

   reach. 
  I 
  saw 
  this 
  mass 
  on 
  three 
  separate 
  occasions, 
  and 
  eventually 
  

   made 
  a 
  coloured 
  sketch 
  of 
  it 
  on 
  the 
  spot, 
  which 
  is 
  reproduced 
  in 
  fig. 
  9. 
  

  

  Fig. 
  9. 
  — 
  Chalk 
  Mass 
  between 
  Cramer 
  and 
  Sherringham. 
  

  

  

  a 
  b. 
  Beds 
  of 
  shells 
  2-3 
  inches 
  thick. 
  

  

  d. 
  Stratified 
  sands. 
  

  

  //. 
  Background 
  of 
  contorted 
  drift. 
  

  

  e. 
  Contorted 
  beds 
  of 
  sand. 
  

   e. 
  TiU. 
  

  

  It 
  was 
  about 
  120 
  feet 
  long 
  ; 
  I 
  judged 
  it 
  to 
  be 
  about 
  12 
  feet 
  in 
  its 
  

   thickest 
  part, 
  thinning 
  out 
  gradually 
  northwards 
  at 
  its 
  lower 
  end, 
  

   where 
  I 
  measured 
  it, 
  to 
  only 
  9 
  inches. 
  This 
  part 
  I 
  could 
  reach 
  with 
  

   my 
  hammer, 
  and 
  found 
  it 
  to 
  be 
  solid 
  compact 
  chalk. 
  The 
  flints, 
  as 
  

   will 
  be 
  seen 
  on 
  reference 
  to 
  the 
  drawing, 
  follow 
  the 
  form 
  of 
  the 
  

   mass, 
  showing 
  that 
  it 
  has 
  been 
  to 
  some 
  extent 
  bent 
  ; 
  but 
  I 
  could 
  

   discover 
  no 
  fractures. 
  But 
  the 
  most 
  remarkable 
  fact 
  I 
  have 
  to 
  

   record 
  as 
  bearing 
  upon 
  the 
  mode 
  of 
  its 
  transport 
  is 
  that, 
  underlying 
  

   it, 
  at 
  a, 
  was 
  a 
  bed 
  of 
  shells 
  about 
  2 
  or 
  3 
  inches 
  thick, 
  consisting 
  of 
  

   broken 
  valves 
  closely 
  packed 
  and 
  crowded 
  together, 
  and 
  above 
  it 
  was 
  

   another 
  and 
  similar 
  bed 
  b. 
  The 
  mass 
  lay 
  at 
  about 
  the 
  angle 
  dis- 
  

   played 
  in 
  the 
  drawing. 
  Where 
  these 
  shells 
  occurred 
  the 
  boulder 
  was 
  

   underlain 
  by 
  contorted 
  beds 
  of 
  sand 
  (c), 
  and 
  above 
  by 
  sands 
  (d) 
  rudely 
  

   stratified 
  in 
  the 
  direction 
  of 
  the 
  upper 
  surface. 
  In 
  addition 
  to 
  those 
  

   I 
  have 
  described 
  are 
  larger 
  masses 
  of 
  chalk 
  marl. 
  It 
  is 
  unnecessary 
  

   for 
  me 
  to 
  describe 
  the 
  " 
  boulders 
  " 
  in 
  greater 
  detail. 
  Lyell, 
  in 
  his 
  

   paper 
  in 
  the 
  Phil. 
  Mag. 
  1840, 
  shows 
  also 
  the 
  lamination 
  and 
  folding 
  

   of 
  the 
  drift 
  in 
  contact 
  with 
  the 
  masses 
  conforming 
  to 
  their 
  outline. 
  

   It 
  must 
  also 
  be 
  remembered 
  that 
  where 
  the 
  included 
  masses 
  do 
  not 
  

   occur 
  in 
  the 
  drift, 
  as 
  at 
  the 
  extreme 
  ends 
  of 
  the 
  section 
  described, 
  it 
  

   is 
  much 
  less 
  disturbed 
  and 
  convoluted 
  in 
  its 
  character. 
  

   Q.J.G.S. 
  No. 
  150. 
  r 
  

  

  