﻿CORRELATION 
  OP 
  THE 
  BOURNEMOUTH 
  BEDS. 
  7 
  

  

  The 
  lenticular 
  patches, 
  both 
  of 
  clay 
  and 
  sand, 
  are 
  frequently 
  cut 
  

   through 
  their 
  steep 
  face 
  to 
  the 
  west, 
  and 
  redeposited, 
  the 
  clays 
  

   being 
  rolled 
  into 
  small 
  boulders 
  and 
  pellets 
  (fig. 
  3). 
  

  

  Fig. 
  3. 
  — 
  Example 
  of 
  Clay 
  and 
  Sand 
  Beds, 
  imbedded 
  in 
  loose 
  Sands 
  

   presenting 
  Escarpments 
  to 
  the 
  West, 
  East 
  of 
  Sugar-loaf 
  Chine. 
  

  

  Under 
  the 
  leaf-bed 
  just 
  described 
  five 
  reefs 
  of 
  pyrites* 
  are 
  visible 
  

   at 
  low 
  water, 
  running 
  south-east 
  with 
  a 
  W.S.W. 
  dip. 
  These 
  are 
  

   succeeded 
  by 
  dark 
  clay 
  dipping 
  E., 
  about 
  1 
  in 
  50, 
  in 
  which 
  I 
  ob- 
  

   served 
  a 
  palm 
  trunk 
  in 
  situ 
  and 
  numerous 
  spines, 
  and 
  a 
  bed 
  of 
  hard 
  

   lignite, 
  from 
  6 
  inches 
  to 
  a 
  foot 
  thick, 
  underlain 
  by 
  brown 
  clay 
  with 
  

   roots 
  and 
  covered 
  by 
  pyritesf 
  . 
  Rocks 
  of 
  pyrites 
  again 
  occur 
  opposite 
  

   Watering 
  Chine, 
  although 
  they 
  are 
  never 
  quite 
  uncovered 
  by 
  the 
  

   sea 
  ; 
  and 
  by 
  means 
  of 
  a 
  diver 
  I 
  was 
  able 
  to 
  trace 
  them 
  two 
  miles 
  sea- 
  

   wards 
  towards 
  Alum 
  Bay. 
  

  

  In 
  the 
  third 
  section 
  of 
  the 
  cliffs, 
  from 
  Watering 
  Chine 
  to 
  the 
  

   Bourne 
  valley 
  (fig. 
  1), 
  several 
  distinct 
  horizons 
  can 
  again 
  be 
  traced. 
  At 
  

   the 
  base 
  there 
  are 
  (1) 
  black 
  clays, 
  obliquely 
  bedded, 
  recalling 
  those 
  

   at 
  the 
  base 
  of 
  the 
  fossiliferous 
  series 
  nearer 
  Poole. 
  Then, 
  in 
  ascend- 
  

   ing 
  order, 
  interrupted 
  and 
  often 
  separated 
  from 
  each 
  other 
  by 
  sands, 
  

   (2) 
  black 
  sandy 
  clay, 
  (3) 
  ironstone, 
  (4) 
  small 
  patches 
  of 
  pipe-clay 
  

   or 
  lightish 
  sandy 
  clay 
  imbedded 
  in 
  sand. 
  Tracing 
  these 
  from 
  bluff 
  

   to 
  bluff, 
  the 
  dark-sandy-clay 
  (2) 
  and 
  the 
  ironstone 
  (3) 
  horizons 
  are 
  

   the 
  most 
  distinct, 
  and 
  dip 
  some 
  3° 
  E. 
  ; 
  but 
  the 
  pipe-clays 
  (4) 
  are 
  for 
  

   some 
  distance 
  only 
  represented 
  by 
  an 
  irregular 
  line 
  of 
  small 
  lumps. 
  

   Up 
  the 
  chine 
  these 
  horizons 
  seem 
  to 
  rise 
  4° 
  or 
  5° 
  N.W. 
  About 
  half- 
  

   way 
  towards 
  Bournemouth 
  the 
  dip 
  brings 
  in, 
  at 
  first 
  close 
  to 
  the 
  top 
  

   of 
  the 
  cliff, 
  a 
  new 
  horizon 
  of 
  sandy 
  clay 
  (5), 
  with 
  indistinct 
  leaf-im- 
  

   pressions 
  at 
  the 
  angle 
  of 
  Broad 
  Chine. 
  The 
  lower 
  bed 
  of 
  dark 
  sandy 
  

   clay 
  (2) 
  can 
  be 
  traced 
  across 
  Broad 
  and 
  Middle 
  Chines, 
  until 
  at 
  its 
  

   western 
  angle 
  it 
  is 
  carried 
  below 
  the 
  beach 
  ; 
  and 
  soon 
  after 
  the 
  iron- 
  

   stone 
  horizon 
  (3) 
  also 
  dips 
  out 
  of 
  sight. 
  The 
  horizon 
  can^ 
  however, 
  

  

  * 
  Many 
  beds 
  charged 
  with 
  iron 
  or 
  lignite, 
  though 
  friable 
  in 
  the 
  cliffs, 
  become 
  

   indurated 
  by 
  sea-water. 
  

  

  t 
  Since 
  writing 
  this 
  description, 
  a 
  very 
  extensive 
  bed 
  of 
  lignite 
  was 
  left 
  exposed, 
  

   just 
  west 
  of 
  Watering 
  Chine, 
  for 
  a 
  few 
  hours 
  by 
  a 
  violent 
  easterly 
  gale 
  and 
  spring 
  

   tides. 
  

  

  